Chess Puzzles by Opening
Browse opening families and lines below to find pages with related chess puzzles and featured master games.
A07
- Benko Opening 2Nf3 (60 puzzles)
- King's Indian Attack (60 puzzles)
- King's Indian Attack: Double Fianchetto (0 puzzles)
- King's Indian Attack: Omega Delta Gambit (1 puzzle)
- King's Indian Attack: Sicilian Variation (16 puzzles)
- King's Indian Attack: Yugoslav Variation (2 puzzles)
- Kings Indian Attack 3Bg2 (17 puzzles)
- Kings Indian Attack 3Bg2 c6 (12 puzzles)
- Kings Indian Attack 3Bg2 c6 4OO (7 puzzles)
- Kings Indian Attack Keres Variation 3Bg2 (0 puzzles)
- Reti KIA 3Bg2 (11 puzzles)
- Reti KIA 4d3 (13 puzzles)
- Reti KIA 4OO (7 puzzles)
- Reti KIA 4OO Bf5 (2 puzzles)
- Reti KIA 4OO Bf5 5d3 (3 puzzles)
- Reti KIA 4OO Bf5 5d3 e6 (0 puzzles)
- Reti KIA 4OO Bg4 (2 puzzles)
- Reti KIA Bg7 (0 puzzles)
- Reti KIA Bg7 4OO (0 puzzles)
- Reti KIA Bg7 4OO e5 (0 puzzles)
- Reti KIA Bg7 4OO e5 5d3 (0 puzzles)
- Reti: KIA 10 (0 puzzles)
- Reti: KIA 11 (9 puzzles)
- Reti: KIA 2 (8 puzzles)
- Reti: KIA 3 (8 puzzles)
- Reti: KIA 4 (1 puzzle)
- Reti: KIA 5 (12 puzzles)
- Reti: KIA 6 (18 puzzles)
- Reti: KIA 7 (17 puzzles)
- Reti: KIA 8 (12 puzzles)
- Reti: KIA 9 (11 puzzles)
- Reti: KIA, Neo Gruenfeld (3 puzzles)
- Reti: KIA, Yugoslav (1 puzzle)
- Reti: KIA, Yugoslav 3 (3 puzzles)
- Reti: KIA, Yugoslav 4 (4 puzzles)
- Reti: KIA, Yugoslav 5 (1 puzzle)
- Reti: KIA, Yugoslav, Main Line, 6.Nbd2 e5 (1 puzzle)
- Reti: KIA, Yugoslav, Main Line, 6.Nbd2 e6 (1 puzzle)
A09
- Reti Accepted 3e3 Nf6 4Bxc4 (8 puzzles)
- Reti Advance 3e3 Nc6 4exd4 (0 puzzles)
- Reti Advance 3g3 c5 4Bg2 (0 puzzles)
- Reti Advance 3g3 c5 4Bg2 Nc6 5d3 (0 puzzles)
- Reti Advance 3g3 g6 4Bg2 (0 puzzles)
- Reti Advance 3g3 Nc6 4Bg2 (1 puzzle)
- Réti Opening (98 puzzles)
- Réti Opening: Advance Variation (21 puzzles)
- Réti Opening: Advance Variation, Michel Gambit (1 puzzle)
- Réti Opening: Réti Accepted (41 puzzles)
- Réti Opening: Reversed Blumenfeld Gambit (1 puzzle)
- Reti: Accepted, 3.e3 (17 puzzles)
- Reti: Accepted, 3.e3 Nf6 (8 puzzles)
- Reti: Accepted, 3.e3 Nf6 4.Bxc4 e6 (3 puzzles)
- Reti: Accepted, 3.Na3 (5 puzzles)
- Reti: Advance, 3.e3 (8 puzzles)
- Reti: Advance, 3.e3 c5 (2 puzzles)
- Reti: Advance, 3.g3 (1 puzzle)
- Reti: Advance, 3.g3 Nc6 (1 puzzle)
- Reti: Advance, 3.g3 Nc6 4.Bg2 e5 (1 puzzle)
- Reti: Advance, Anglo Polish Attack (11 puzzles)
A15
- Benko Opening 2Nf3 (60 puzzles)
- Benko Opening 2Nf3 g6 (0 puzzles)
- Benko Opening 2Nf3 g6 3c4 (0 puzzles)
- English AngloIndian 2g3 g6 3Bg2 (5 puzzles)
- English AngloIndian 2Nf3 g6 (14 puzzles)
- English AngloIndian 2Nf3 g6 3g3 (5 puzzles)
- English AngloIndian 2Nf3 g6 3g3 Bg7 (5 puzzles)
- English Opening AngloIndian Defense Kings Indian Formation 3g3 (5 puzzles)
- English Opening AngloIndian Defense Kings Indian Formation 3Nc3 (8 puzzles)
- English Opening AngloIndian Defense Kings Indian Formation 3Nc3 Bg7 (9 puzzles)
- English Opening AngloIndian Defense Kings Knight Variation e6 (10 puzzles)
- English Opening AngloIndian Defense Kings Knight Variation e6 3g3 (4 puzzles)
- English Opening AngloIndian Defense Kings Knight Variation e6 3g3 b6 (1 puzzle)
- English Opening AngloIndian Defense Kings Knight Variation e6 3g3 b6 4Bg2 (1 puzzle)
- English Opening AngloIndian Defense Queens Indian Formation 3g3 (0 puzzles)
- English Opening AngloIndian Defense Queens Indian Formation 3g3 Bb7 (0 puzzles)
- English Opening AngloIndian Defense Queens Indian Formation 3g3 Bb7 4Bg2 (0 puzzles)
- English Opening AngloIndian Defense Scandinavian Defense 3cxd5 (11 puzzles)
- English Opening: Anglo Indian Defense (160 puzzles)
- English Opening: Anglo Indian Defense, Anti Anti Grünfeld (2 puzzles)
- English Opening: Anglo Indian Defense, King's Indian Formation (14 puzzles)
- English Opening: Anglo Indian Defense, King's Indian Formation, Double Fianchetto (0 puzzles)
- English Opening: Anglo Indian Defense, King's Knight Variation (43 puzzles)
- English Opening: Anglo Indian Defense, Queen's Indian Formation 2 (1 puzzle)
- English Opening: Anglo Indian Defense, Scandinavian Defense (19 puzzles)
- English Opening: Anglo Indian Defense, Scandinavian Defense, Exchange Variation (9 puzzles)
- English: Anglo Indian, 2.g3 (17 puzzles)
- English: Anglo Indian, 2.g3 e6 (4 puzzles)
- English: Anglo Indian, 2.g3 e6 2 (4 puzzles)
- English: Anglo Indian, 2.g3 g6 (7 puzzles)
- English: Anglo Indian, 2.g3 g6 2 (5 puzzles)
- English: Anglo Indian, 2.Nf3 (43 puzzles)
- English: Anglo Indian, 2.Nf3 g6 (4 puzzles)
- English: Anglo Indian, 2.Nf3 g6 2 (8 puzzles)
A16
- English AngloGruenfeld 3cxd5 Nxd5 (15 puzzles)
- English AngloGruenfeld 3cxd5 Nxd5 4g3 (4 puzzles)
- English AngloGruenfeld 3cxd5 Nxd5 4g3 g6 (2 puzzles)
- English AngloGruenfeld 3cxd5 Nxd5 4g3 g6 5Bg2 (2 puzzles)
- English AngloGruenfeld AnderssonBoeoek Variation Nxc3 (0 puzzles)
- English AngloGruenfeld AnderssonBoeoek Variation Nxc3 6dxc3 (0 puzzles)
- English AngloGruenfeld AnderssonBoeoek Variation Nxc3 6dxc3 Qxd1 (0 puzzles)
- English Opening: Anglo Grünfeld Defense (17 puzzles)
- English Opening: Anglo Indian Defense, Anglo Grünfeld Variation (3 puzzles)
- English Opening: Anglo Indian Defense, Anglo Grünfeld Variation 2 (2 puzzles)
- English Opening: Anglo Indian Defense, Queen's Knight Variation (100 puzzles)
- English: Anglo Gruenfeld, 3.cxd5 (16 puzzles)
- English: Anglo Gruenfeld, Smyslov Variation (2 puzzles)
- English: Anglo Gruenfeld, Smyslov Variation 2 (2 puzzles)
- English: Anglo Indian, 2.Nc3 d6 (4 puzzles)
- English: Anglo Indian, 2.Nc3 g6 (25 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 (12 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 2 (6 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 3 (9 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 4 (10 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 5 (4 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 6 (14 puzzles)
- English: Anglo Indian, 2.Nc3 g6 3.g3 7 (4 puzzles)
- English: Anglo Indian, 2.Nc3 Nc6 (3 puzzles)
A20
- English Opening: King's English Variation (342 puzzles)
- English: King's, 2.d3 (11 puzzles)
- English: King's, 2.e3 (23 puzzles)
- English: King's, 2.g3 (50 puzzles)
- English: King's, 2.g3 f5 (5 puzzles)
- English: King's, 2.g3 g6 3 (0 puzzles)
- English: King's, 2.g3 Nc6 (9 puzzles)
- English: King's, 2.g3 Nc6 3.Bg2 (8 puzzles)
- English: King's, 2.g3 Nf6 (19 puzzles)
- English: King's, 2.g3 Nf6 3.Bg2 (19 puzzles)
- English: King's, 2.g3 Nf6 3.Bg2 Bc5 (4 puzzles)
- English: King's, 2.g3 Nf6 3.Bg2 c6 (3 puzzles)
- English: King's, 2.g3 Nf6 3.Bg2 d5 (10 puzzles)
- English: King's, 2.g3 Nf6 3.Bg2 Nc6 (7 puzzles)
A21
- English Opening: King's English Variation, Kramnik Shirov Counterattack (21 puzzles)
- English Opening: King's English Variation, Reversed Sicilian (211 puzzles)
- English: King's, 2.Nc3 d6 3.d4 (2 puzzles)
- English: King's, 2.Nc3 f5 3 (6 puzzles)
- English: Kramnik Shirov, 3.g3 (5 puzzles)
- English: Kramnik Shirov, 3.g3 Bxc3 (4 puzzles)
- English: Kramnik Shirov, 3.g3 Bxc3 4.bxc3 (3 puzzles)
- English: Kramnik Shirov, 3.Nd5 (5 puzzles)
- English: Kramnik Shirov, 3.Nd5 a5 (1 puzzle)
- English: Kramnik Shirov, 3.Nd5 Be7 (1 puzzle)
A22
- English Opening: Carls Bremen System (40 puzzles)
- English Opening: King's English Variation, Two Knights Variation (110 puzzles)
- English Opening: King's English Variation, Two Knights Variation, Reversed Dragon (14 puzzles)
- English Opening: King's English Variation, Two Knights Variation, Smyslov System (7 puzzles)
- English: Bremen, 3...Bc5 (9 puzzles)
- English: Bremen, Reverse Dragon, 4.cxd5 (11 puzzles)
- English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 (11 puzzles)
- English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 5.Bg2 (17 puzzles)
- English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 5.Bg2 Nb6 (2 puzzles)
- English: Bremen, Smyslov, 4.Bg2 (5 puzzles)
- English: Bremen, Smyslov, 4.Bg2 Bxc3 (4 puzzles)
- English: Bremen, Smyslov, 4.Bg2 O O (1 puzzle)
- English: King's, 2.Nc3 Nf6 3.e3 (13 puzzles)
- English: King's, 2.Nc3 Nf6 3.e3 Bb4 (3 puzzles)
- English: King's, 2.Nc3 Nf6 3.e4 (18 puzzles)
- English: King's, 2.Nc3 Nf6 3.Nf3 (37 puzzles)
- English: King's, 2.Nc3 Nf6 3.Nf3 e4 (9 puzzles)
A28
- English Opening: Four Knights System, Nimzowitsch Variation (7 puzzles)
- English Opening: King's English Variation, Four Knights Variation 2 (29 puzzles)
- English Opening: King's English Variation, Four Knights Variation, Flexible Line (4 puzzles)
- English Opening: King's English Variation, Four Knights Variation, Quiet Line (0 puzzles)
- English Opening: King's English Variation, Four Knights Variation, Quiet Line 2 (11 puzzles)
- English: Four Knights, 4.d4 (5 puzzles)
- English: Four Knights, 4.e3 Bb4 (9 puzzles)
- English: Four Knights, 4.e3 Bb4 5.Qc2 (6 puzzles)
A29
- English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (8 puzzles)
- English: Four Knights, 4.g3 Bc5 (1 puzzle)
- English: Four Knights, 4.g3 Bc5 2 (1 puzzle)
- English: Four Knights, 4.g3 Bc5 4 (2 puzzles)
- English: Four Knights, 4.g3 Bc5 5 (1 puzzle)
- English: Four Knights, 4.g3 d5 (3 puzzles)
- English: Four Knights, 4.g3 d5 5.cxd5 (3 puzzles)
- English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 (3 puzzles)
- English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 (3 puzzles)
- English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be6 (4 puzzles)
- English: Four Knights, Main Line 6.O O (1 puzzle)
A31
- English Opening: Symmetrical Variation, Anti Benoni Variation (18 puzzles)
- English: Symmetrical, Two Knights (18 puzzles)
- English: Symmetrical, Two Knights 2 (18 puzzles)
- English: Symmetrical, Two Knights 3 (17 puzzles)
- English: Symmetrical, Two Knights, 3...g6 2 (5 puzzles)
- English: Symmetrical, Two Knights, 3...g6 3 (3 puzzles)
- English: Symmetrical, Two Knights, 4...b6 2 (2 puzzles)
- English: Symmetrical, Two Knights, 4...e5 (6 puzzles)
- English: Symmetrical, Two Knights, 4...g6 (2 puzzles)
- English: Symmetrical, Two Knights, 4...g6 2 (3 puzzles)
- English: Symmetrical, Two Knights, 4...g6 3 (4 puzzles)
- English: Symmetrical, Two Knights, 4...Nc6 (6 puzzles)
- English: Symmetrical, Two Knights, 4...Nc6 2 (8 puzzles)
A33
- English Opening: Symmetrical Variation, Anti Benoni Variation, Geller Variation (1 puzzle)
- English Opening: Symmetrical Variation, Anti Benoni Variation, Spielmann Defense (3 puzzles)
- English: Symmetrical, Geller, 7.Nb3 (0 puzzles)
- English: Symmetrical, Geller, 7.Nb3 Ne5 (0 puzzles)
- English: Symmetrical, Two Knights, 5.Nc3 Nc6 (3 puzzles)
- English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 (1 puzzle)
A34
- English Opening: Symmetrical Variation, Fianchetto Variation (6 puzzles)
- English Opening: Symmetrical Variation, Normal Variation (37 puzzles)
- English Opening: Symmetrical Variation, Rubinstein Variation (0 puzzles)
- English Opening: Symmetrical Variation, Three Knights Variation (8 puzzles)
- English: Symmetrical, 2...b6 (0 puzzles)
- English: Symmetrical, 2...b6 2 (0 puzzles)
- English: Symmetrical, 2...g6 (3 puzzles)
- English: Symmetrical, 2...Nf6 (0 puzzles)
- English: Symmetrical, 2...Nf6 2 (9 puzzles)
- English: Symmetrical, 2...Nf6 3.g3 (1 puzzle)
- English: Symmetrical, 3 Knights (0 puzzles)
- English: Symmetrical, 3 Knights, 5.d4 (1 puzzle)
- English: Symmetrical, 3 Knights, 5.d4 cxd4 (0 puzzles)
- English: Symmetrical, 3 Knights, 5.e4 (0 puzzles)
- English: Symmetrical, 3 Knights, 5.e4 Nb4 (0 puzzles)
- English: Symmetrical, 3 Knights, 5.e4 Nb4 6.Bc4 (0 puzzles)
- English: Symmetrical, 3 Knights, Exchange (0 puzzles)
A35
- English Opening: Symmetrical Variation, Four Knights Variation (9 puzzles)
- English Opening: Symmetrical Variation, Two Knights Variation (22 puzzles)
- English: Symmetrical, Four Knights (9 puzzles)
- English: Symmetrical, Four Knights, 4.d4 (0 puzzles)
- English: Symmetrical, Four Knights, 4.e3 (3 puzzles)
- English: Symmetrical, Four Knights, 4.e3 e5 (2 puzzles)
- English: Symmetrical, Four Knights, 4.g3 (2 puzzles)
A36
- English Opening: Symmetrical Variation, Symmetrical Variation (6 puzzles)
- English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation (8 puzzles)
- English: Symmetrical, 3.g3 g6 (5 puzzles)
- English: Symmetrical, 3.g3 g6 2 (3 puzzles)
- English: Symmetrical, 3.g3 g6 3 (6 puzzles)
- English: Symmetrical, 3.g3 Nf6 (7 puzzles)
- English: Symmetrical, 5.d3 (2 puzzles)
- English: Symmetrical, 5.e3 (2 puzzles)
- English: Symmetrical, 5.e3 e6 (1 puzzle)
- English: Symmetrical, 5.e3 e6 2 (1 puzzle)
- English: Symmetrical, 5.e3 e6 3 (1 puzzle)
- English: Symmetrical, Botvinnik System, 5...d6, 7.O O O O (2 puzzles)
- English: Symmetrical, Botvinnik System, 5...d6, 8.d3 (4 puzzles)
- English: Symmetrical, Botvinnik System, 5...d6, 8.d3 a6 (2 puzzles)
- English: Symmetrical, Botvinnik System, 5...d6, 8.d3 Rb8 (1 puzzle)
- English: Symmetrical, Botvinnik, 5...d6 6.Nge2 (1 puzzle)
- English: Symmetrical, Botvinnik, 5...d6 6.Nge2 Nf6 (1 puzzle)
- English: Symmetrical, Keres Parma System (0 puzzles)
A37
- English Opening: Symmetrical Variation, Botvinnik System Reversed, 4. g3 g6 5. Bg2 Bg7 (2 puzzles)
- English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (2 puzzles)
- English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation (6 puzzles)
- English: Symmetrical, 5.Nf3 d6 6.O O (3 puzzles)
- English: Symmetrical, 5.Nf3 e5 6.O O (2 puzzles)
- English: Symmetrical, 5.Nf3 e5 6.O O d6 7.d3 Nge7 (2 puzzles)
- English: Symmetrical, 5.Nf3 e5 6.O O d6 7.d3 Nge7 8.a3 (2 puzzles)
- English: Symmetrical, 5.Nf3 e5 6.O O Nge7 (1 puzzle)
- English: Symmetrical, 5.Nf3 e5 6.O O Nge7 7.d3 (1 puzzle)
A41
- Modern Defense (17 puzzles)
- Neo Old Indian: 2.Nf3 (28 puzzles)
- Neo Old Indian: Modern (5 puzzles)
- Neo Old Indian: Modern, 3.e4 (10 puzzles)
- Neo Old Indian: Modern, 3.e4 Bg7 (17 puzzles)
- Neo Old Indian: Modern, 3.Nc3 (4 puzzles)
- Neo Old Indian: Modern, 3.Nc3 Bg7 (17 puzzles)
- Neo Old Indian: Modern, 3.Nc3 Bg7 4.Nf3 (11 puzzles)
- Neo Old Indian: Modern, 3.Nf3 (4 puzzles)
- Neo Old Indian: Modern, 3.Nf3 Bg7 (12 puzzles)
- Neo Old Indian: Modern, 3.Nf3 Bg7 4.e4 (6 puzzles)
- Neo Old Indian: Wade Defence, 3.e4 (2 puzzles)
- Neo Old Indian: Wade Defence, 3.e4 Nf6 (2 puzzles)
- Old Indian Defense (48 puzzles)
- Queen's Pawn Game (138 puzzles)
- Rat Defense: English Rat (12 puzzles)
- Wade Defense (4 puzzles)
A42
- Modern Defense: Averbakh System (19 puzzles)
- Modern: Averbakh, 4...c6 (6 puzzles)
- Modern: Averbakh, 4...e5 5.Nf3 Nd7 (3 puzzles)
- Modern: Averbakh, 4...Nd7 5.Nf3 (5 puzzles)
- Modern: Averbakh, Kotov, 5.Be3 (3 puzzles)
- Modern: Averbakh, Kotov, 5.Be3 e5 (2 puzzles)
- Modern: Averbakh, Kotov, 5.Be3 e5 6.d5 (2 puzzles)
- Modern: Averbakh, Kotov, 5.Be3 e5 6.d5 Nce7 (2 puzzles)
A87
- Dutch: Leningrad, Main Line, 5...d6 6.Nc3 (3 puzzles)
- Dutch: Leningrad, Main Line, 6...d6 (0 puzzles)
- Dutch: Leningrad, Main Line, 6.Nc3 d6 (3 puzzles)
- Dutch: Leningrad, Main Line, 6.O O (0 puzzles)
- Dutch: Leningrad, Main Line, 7.Nc3 (2 puzzles)
- Dutch: Leningrad, Main Line, 7.Nc3 Qe8 (2 puzzles)
B01
- Scandinavian Defense (1342 puzzles)
- Scandinavian Defense: Boehnke Gambit (13 puzzles)
- Scandinavian Defense: Gubinsky Melts Defense (47 puzzles)
- Scandinavian Defense: Icelandic Palme Gambit (45 puzzles)
- Scandinavian Defense: Kádas Gambit (1 puzzle)
- Scandinavian Defense: Main Line (214 puzzles)
- Scandinavian Defense: Main Line, Leonhardt Gambit (21 puzzles)
- Scandinavian Defense: Main Line, Mieses Variation (38 puzzles)
- Scandinavian Defense: Marshall Variation (40 puzzles)
- Scandinavian Defense: Mieses Kotroc Variation (563 puzzles)
- Scandinavian Defense: Modern Variation (64 puzzles)
- Scandinavian Defense: Modern Variation 2 (343 puzzles)
- Scandinavian Defense: Modern Variation, Gipslis Variation (17 puzzles)
- Scandinavian Defense: Panov Transfer (19 puzzles)
- Scandinavian Defense: Portuguese Gambit (12 puzzles)
- Scandinavian Defense: Portuguese Gambit, Banker Variation (1 puzzle)
- Scandinavian Defense: Richter Variation (2 puzzles)
- Scandinavian Defense: Valencian Variation (109 puzzles)
- Scandinavian Defense: Valencian Variation, Main Line (8 puzzles)
- Scandinavian: 2...Nf6 3.Bb5+ (16 puzzles)
- Scandinavian: 2...Nf6 3.Bb5+ Bd7 (7 puzzles)
- Scandinavian: 2...Nf6 3.Bb5+ Bd7 4.Bc4 (4 puzzles)
- Scandinavian: 2...Nf6 3.Bc4 (19 puzzles)
- Scandinavian: 2...Nf6 3.c4 (73 puzzles)
- Scandinavian: 2...Nf6 3.Nf3 (60 puzzles)
- Scandinavian: 2...Nf6 3.Nf3 Nxd5 (33 puzzles)
- Scandinavian: 2...Qxd5 3.d4 (38 puzzles)
- Scandinavian: 2...Qxd5 3.d4 Nf6 (10 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 (434 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.Bc4 (15 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.Bc4 Nf6 (8 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.d4 (73 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.d4 c6 (22 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.d4 c6 5.Bc4 (3 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.d4 c6 5.Nf3 (15 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.Nf3 (74 puzzles)
- Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.Nf3 Nf6 (29 puzzles)
- Scandinavian: 2...Qxd5 3.Nf3 (61 puzzles)
- Scandinavian: 2...Qxd5 3.Nf3 Nf6 (21 puzzles)
- Scandinavian: 2...Qxd5, 5.Bc4 c6 (4 puzzles)
- Scandinavian: 2...Qxd5, 5.Bd2 (12 puzzles)
- Scandinavian: 2...Qxd5, 5.Nf3 (25 puzzles)
- Scandinavian: 2...Qxd5, 5.Nf3 Bg4 (17 puzzles)
- Scandinavian: 2...Qxd5, Main Line (8 puzzles)
- Scandinavian: 2...Qxd5, Main Line, 6.Bc4 (5 puzzles)
- Scandinavian: 2...Qxd5, Main Line, 6.Bc4 Bf5 (1 puzzle)
- Scandinavian: 2...Qxd5, Main Line, 6.Bc4 Bf5 7.Bd2 (1 puzzle)
- Scandinavian: 2...Qxd5, Main Line, 6.Bc4 Bf5 7.Bd2 e6 (1 puzzle)
- Scandinavian: 2...Qxd5, Main Line, 6.Bc4 Bg4 (5 puzzles)
- Scandinavian: 2...Qxd5, Main Line, 8.Qe2 (1 puzzle)
- Scandinavian: 2.d3 (16 puzzles)
- Scandinavian: 2.e5 (124 puzzles)
- Scandinavian: 2.exd5 (988 puzzles)
- Scandinavian: Boehnke Gambit (3 puzzles)
- Scandinavian: Icelandic Gambit Accepted (36 puzzles)
- Scandinavian: Icelandic Gambit Accepted 2 (34 puzzles)
- Scandinavian: Marshall, 4.c4 (17 puzzles)
- Scandinavian: Marshall, 4.c4 Nb6 (4 puzzles)
- Scandinavian: Marshall, 4.c4 Nb6 5.Nc3 (3 puzzles)
- Scandinavian: Marshall, 4.c4 Nb6 5.Nf3 g6 (2 puzzles)
- Scandinavian: Marshall, 4.c4 Nb6 5.Nf3 g6 6.Nc3 (2 puzzles)
- Scandinavian: Marshall, 4.c4 Nb6 5.Nf3 g6 6.Nc3 Bg7 (2 puzzles)
- Scandinavian: Marshall, 4.c4 Nf6 (8 puzzles)
- Scandinavian: Marshall, 4.Nf3 (32 puzzles)
- Scandinavian: Marshall, 4.Nf3 Bf5 (6 puzzles)
- Scandinavian: Portuguese, 4.f3 (2 puzzles)
- Scandinavian: Portuguese, 4.f3 Bf5 (2 puzzles)
- Scandinavian: Scandinavian Gambit Accepted (15 puzzles)
- Scandinavian: Schiller, 4.d4 Nf6 (12 puzzles)
B02
- Alekhine Defense (281 puzzles)
- Alekhine Defense: Brooklyn Variation (6 puzzles)
- Alekhine Defense: Maróczy Variation (8 puzzles)
- Alekhine Defense: Normal Variation (135 puzzles)
- Alekhine Defense: Scandinavian Variation (61 puzzles)
- Alekhine Defense: Scandinavian Variation, Geschev Gambit (3 puzzles)
- Alekhine Defense: Two Pawns Attack (43 puzzles)
- Alekhine: 2.e5 (146 puzzles)
- Alekhine: 3.Bc4 (14 puzzles)
- Alekhine: Chase Variation (40 puzzles)
- Alekhine: Scandinavian Variation (108 puzzles)
- Alekhine: Scandinavian, 3.e5 (27 puzzles)
- Alekhine: Scandinavian, Exchange (118 puzzles)
- Alekhine: Scandinavian, Exchange 2 (135 puzzles)
- Alekhine: Scandinavian, Exchange, 4.Bc4 (20 puzzles)
- Alekhine: Scandinavian, Exchange, 4.Bc4 Nb6 (2 puzzles)
- Alekhine: Scandinavian, Exchange, 4.Nxd5 (53 puzzles)
- Alekhine: Scandinavian, Exchange, 4.Nxd5 2 (52 puzzles)
B03
- Alekhine Defense (49 puzzles)
- Alekhine Defense 2 (32 puzzles)
- Alekhine Defense 3 (8 puzzles)
- Alekhine Defense: Exchange Variation (8 puzzles)
- Alekhine Defense: Four Pawns Attack (6 puzzles)
- Alekhine Defense: Four Pawns Attack, Main Line (2 puzzles)
- Alekhine: 3.d4 d6 4.exd6 (3 puzzles)
- Alekhine: 4.c4 Nb6 (24 puzzles)
- Alekhine: Exchange, 5...cxd6 (4 puzzles)
- Alekhine: Exchange, 5...cxd6 6.Nc3 (2 puzzles)
- Alekhine: Exchange, 5...cxd6 6.Nc3 g6 7.Be3 (1 puzzle)
- Alekhine: Exchange, 5...exd6 (4 puzzles)
- Alekhine: Exchange, 5...exd6 6.Nc3 (2 puzzles)
- Alekhine: Exchange, 5...exd6 6.Nc3 Be7 (2 puzzles)
- Alekhine: Four Pawns Attack, 5...dxe5 (5 puzzles)
- Alekhine: Four Pawns Attack, 5...dxe5 2 (5 puzzles)
- Alekhine: Four Pawns Attack, 6...Nc6 (4 puzzles)
B10
- Caro Kann Defense (1354 puzzles)
- Caro Kann Defense 2 (111 puzzles)
- Caro Kann Defense 3 (119 puzzles)
- Caro Kann Defense: Accelerated Panov Attack (52 puzzles)
- Caro Kann Defense: Accelerated Panov Attack 2 (62 puzzles)
- Caro Kann Defense: Accelerated Panov Attack, Modern Variation (20 puzzles)
- Caro Kann Defense: Breyer Variation (38 puzzles)
- Caro Kann Defense: Euwe Attack (3 puzzles)
- Caro Kann Defense: Hillbilly Attack (51 puzzles)
- Caro Kann Defense: Two Knights Attack (122 puzzles)
- Caro Kann: 2.f4 (59 puzzles)
- Caro Kann: 2.Ne2 (6 puzzles)
- Caro Kann: 2.Nf3 (336 puzzles)
- Caro Kann: Breyer Variation (37 puzzles)
- Caro Kann: Breyer, 3.Nd2 (16 puzzles)
- Caro Kann: Breyer, 3.Nd2 e5 (4 puzzles)
- Caro Kann: English Variation (37 puzzles)
- Caro Kann: English Variation 2 (12 puzzles)
- Caro Kann: English Variation 3 (12 puzzles)
- Caro Kann: English Variation 4 (37 puzzles)
- Caro Kann: English, Exchange (37 puzzles)
- Caro Kann: English, Exchange, 4...Nf6 5.Bb5+ (3 puzzles)
- Caro Kann: English, Exchange, 4...Nf6 5.Nc3 (11 puzzles)
- Caro Kann: English, Exchange, 4...Nf6 5.Nc3 Nxd5 (11 puzzles)
- Caro Kann: Two Knights, 3...dxe4 (68 puzzles)
- Caro Kann: Two Knights, 3...dxe4 4.Nxe4 (66 puzzles)
- Caro Kann: Two Knights, 3...dxe4 4.Nxe4 Nf6 (29 puzzles)
B11
- Caro Kann Defense: Two Knights Attack, Mindeno Variation (23 puzzles)
- Caro Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line (11 puzzles)
- Caro Kann Defense: Two Knights Attack, Mindeno Variation, Retreat Line (5 puzzles)
- Caro Kann: Two Knights, 3...Bg4 4.h3 (16 puzzles)
- Caro Kann: Two Knights, 3...Bg4 4.h3 Bh5, 7.g4 Bg6 (2 puzzles)
- Caro Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 (11 puzzles)
- Caro Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 (4 puzzles)
- Caro Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d4 (2 puzzles)
- Caro Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 Nf6 (1 puzzle)
B12
- Caro Kann Defense (686 puzzles)
- Caro Kann Defense 2 (663 puzzles)
- Caro Kann Defense: Advance Variation (228 puzzles)
- Caro Kann Defense: Advance Variation, Bayonet Attack (10 puzzles)
- Caro Kann Defense: Advance Variation, Botvinnik Carls Defense (74 puzzles)
- Caro Kann Defense: Advance Variation, Bronstein Variation (3 puzzles)
- Caro Kann Defense: Advance Variation, Short Variation (52 puzzles)
- Caro Kann Defense: Advance Variation, Tal Variation (27 puzzles)
- Caro Kann Defense: Advance Variation, Van der Wiel Attack (20 puzzles)
- Caro Kann Defense: Maróczy Variation (59 puzzles)
- Caro Kann Defense: Modern Variation (23 puzzles)
- Caro Kann: 3.Nd2 dxe4 (18 puzzles)
- Caro Kann: Advance, 3...Bf5 (132 puzzles)
- Caro Kann: Advance, 3...c5 4.dxc5 (18 puzzles)
- Caro Kann: Advance, 4.Bd3 (15 puzzles)
- Caro Kann: Advance, 4.c3 (4 puzzles)
- Caro Kann: Advance, 4.Nc3 e6 (16 puzzles)
- Caro Kann: Advance, 4.Nf3 e6 (39 puzzles)
- Caro Kann: Advance, 4.Nf3 e6 5.Be2 (8 puzzles)
- Caro Kann: Advance, 4.Nf3 e6 5.Be2 Nd7 (2 puzzles)
- Caro Kann: Advance, Main Line (3 puzzles)
- Caro Kann: Maroczy (Fantasy), 3...dxe4 (25 puzzles)
- Caro Kann: Ulysses Gambit (21 puzzles)
B13
- Caro Kann Defense: Exchange Variation (163 puzzles)
- Caro Kann Defense: Exchange Variation, Rubinstein Variation (9 puzzles)
- Caro Kann Defense: Panov Attack (51 puzzles)
- Caro Kann Defense: Panov Attack 2 (18 puzzles)
- Caro Kann Defense: Panov Attack, Gunderam Attack (3 puzzles)
- Caro Kann Defense: Panov Attack, Modern Defense (5 puzzles)
- Caro Kann Defense: Panov Attack, Modern Defense, Mieses Line (0 puzzles)
- Caro Kann: Exchange, 3...cxd5 (165 puzzles)
- Caro Kann: Exchange, 3...Qxd5 (4 puzzles)
- Caro Kann: Exchange, 4.Bd3 (38 puzzles)
- Caro Kann: Exchange, 4.Bd3 Nc6 (22 puzzles)
- Caro Kann: Exchange, 4.Bd3 Nc6 5.c3 (16 puzzles)
- Caro Kann: Exchange, 4.Bd3 Nc6 5.c3 Nf6 (10 puzzles)
- Caro Kann: Exchange, 4.Bd3 Nc6 5.c3 Nf6 6.Nf3 (4 puzzles)
- Caro Kann: Exchange, 4.Nf3 (149 puzzles)
- Caro Kann: Exchange, 4.Nf3 Nf6 (26 puzzles)
- Caro Kann: Exchange, Rubinstein, 6...Bg4 (4 puzzles)
- Caro Kann: Panov Botvinnik, 4...e6 (6 puzzles)
- Caro Kann: Panov Botvinnik, 4...Nf6 (31 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Bg5 (4 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Bg5 dxc4 (3 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.cxd5 Nxd5 (5 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Nf3 (2 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Nf3 Bg4 (2 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Nf3 Bg4 2 (0 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Nf3 Bg4: 8.Qb3 (0 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6 6.Nf3 Bg4: Main Line (0 puzzles)
- Caro Kann: Panov Botvinnik, 5...Nc6, Normal Variation (1 puzzle)
- Caro Kann: Panov Botvinnik, 5...Nc6, Normal Variation 2 (1 puzzle)
B18
- Caro Kann Defense: Classical Variation (69 puzzles)
- Caro Kann Defense: Classical Variation, Main Line (6 puzzles)
- Caro Kann: Classical, 5.Nc5 (3 puzzles)
- Caro Kann: Classical, 5.Ng3 (33 puzzles)
- Caro Kann: Classical, 5.Ng3 Bg6 (30 puzzles)
- Caro Kann: Classical, 6.Bc4 (2 puzzles)
- Caro Kann: Classical, 6.h4 h6 (5 puzzles)
- Caro Kann: Classical, 6.h4 h6 7.h5 (1 puzzle)
- Caro Kann: Classical, 6.N1e2 (1 puzzle)
- Caro Kann: Classical, 6.Nf3 (15 puzzles)
- Caro Kann: Classical, 6.Nf3 Nd7 (6 puzzles)
- Caro Kann: Classical, 6.Nf3 Nd7 7.Bd3 (2 puzzles)
B21
- Sicilian Defense: McDonnell Attack (173 puzzles)
- Sicilian Defense: Morphy Gambit (27 puzzles)
- Sicilian Defense: Smith Morra Gambit (161 puzzles)
- Sicilian Defense: Smith Morra Gambit 2 (291 puzzles)
- Sicilian Defense: Smith Morra Gambit Accepted, Fianchetto Defense (3 puzzles)
- Sicilian Defense: Smith Morra Gambit Accepted, Kan Formation (5 puzzles)
- Sicilian Defense: Smith Morra Gambit Accepted, Paulsen Formation (4 puzzles)
- Sicilian Defense: Smith Morra Gambit Accepted, Pin Defense (2 puzzles)
- Sicilian Defense: Smith Morra Gambit Declined, Alapin Formation (18 puzzles)
- Sicilian Defense: Smith Morra Gambit Declined, Center Formation (8 puzzles)
- Sicilian Defense: Smith Morra Gambit Declined, Dubois Variation (2 puzzles)
- Sicilian Defense: Smith Morra Gambit Declined, Push Variation (12 puzzles)
- Sicilian: Grand Prix, 2...d6 (37 puzzles)
- Sicilian: Grand Prix, 2...e6 (29 puzzles)
- Sicilian: Grand Prix, 2...e6 3.Nf3 (23 puzzles)
- Sicilian: Grand Prix, 2...g6 (6 puzzles)
- Sicilian: Grand Prix, 2...Nc6 (58 puzzles)
- Sicilian: Grand Prix, 2...Nc6 3.Nf3 (53 puzzles)
- Sicilian: Grand Prix, 2...Nc6 3.Nf3 e6 (22 puzzles)
- Sicilian: Smith Morra Accepted (89 puzzles)
- Sicilian: Smith Morra Accepted 2 (104 puzzles)
- Sicilian: Smith Morra, 2...cxd4 (263 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 d6 (17 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 e6 (22 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 e6 5.Nf3 (15 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 Nc6 (33 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 Nc6 5.Nf3 (28 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 Nc6 5.Nf3 d6 (13 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 Nc6 5.Nf3 e6 (14 puzzles)
- Sicilian: Smith Morra, 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 (13 puzzles)
- Sicilian: Smith Morra, 5.Nf3 d6 6.Bc4 (10 puzzles)
- Sicilian: Smith Morra, 5.Nf3 d6 6.Bc4 e6 7.O O Nf6 8.Qe2 Be7 (1 puzzle)
B22
- Sicilian Defense: Alapin Variation (221 puzzles)
- Sicilian Defense: Alapin Variation, Barmen Defense (33 puzzles)
- Sicilian Defense: Alapin Variation, Smith Morra Declined (27 puzzles)
- Sicilian: Alapin, 2...d5 (56 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 (35 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 (16 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 cxd4 (8 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 cxd4 5.cxd4 (3 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 e6 (5 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 e6 5.Nf3 (5 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6 (1 puzzle)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 (10 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 Bg4 (5 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 cxd4 (8 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 cxd4 6.cxd4 (9 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6 (5 puzzles)
- Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 (4 puzzles)
- Sicilian: Alapin, 2...d6 (22 puzzles)
- Sicilian: Alapin, 2...e5 (23 puzzles)
- Sicilian: Alapin, 2...e6 (24 puzzles)
- Sicilian: Alapin, 2...e6 3.d4 (29 puzzles)
- Sicilian: Alapin, 2...e6 3.d4 d5 (10 puzzles)
- Sicilian: Alapin, 2...e6 3.d4 d5 4.exd5 (7 puzzles)
- Sicilian: Alapin, 2...e6 3.d4 d5 4.exd5 exd5 5.Nf3 (7 puzzles)
- Sicilian: Alapin, 2...e6 3.d4 d5 4.exd5 exd5 5.Nf3 Nc6 (3 puzzles)
- Sicilian: Alapin, 2...e6 3.Nf3 (29 puzzles)
- Sicilian: Alapin, 2...e6 3.Nf3 d5 (6 puzzles)
- Sicilian: Alapin, 2...Nc6 (43 puzzles)
- Sicilian: Alapin, 2...Nc6 3.d4 (34 puzzles)
- Sicilian: Alapin, 2...Nc6 3.Nf3 (92 puzzles)
- Sicilian: Alapin, 2...Nf6 (34 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 (25 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 (24 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 (16 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 (7 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 e6 (6 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 Nc6 (9 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 Nc6 6.Bc4 (3 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.Nf3 (2 puzzles)
- Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.Nf3 Nc6 (7 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.Bc4 (1 puzzle)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 (18 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 d6 (4 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 d6 6.Nf3 Nc6 (8 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 d6 6.Nf3 Nc6 7.Bc4 (3 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 (4 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 6.Nf3 (7 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 6.Nf3 b6 (2 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 6.Nf3 d6 (4 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 6.Nf3 Nc6 (2 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.cxd4 Nc6 6.Nf3 (10 puzzles)
- Sicilian: Alapin, 2...Nf6, 5.Qxd4 (1 puzzle)
B23
- Sicilian Defense: Closed (301 puzzles)
- Sicilian Defense: Closed 2 (62 puzzles)
- Sicilian Defense: Closed, Traditional (139 puzzles)
- Sicilian Defense: Grand Prix Attack (34 puzzles)
- Sicilian Defense: Grand Prix Attack, Schofman Variation (1 puzzle)
- Sicilian: Closed (25 puzzles)
- Sicilian: Closed 3 (3 puzzles)
- Sicilian: Closed 4 (1 puzzle)
- Sicilian: Closed 5 (62 puzzles)
- Sicilian: Closed 6 (25 puzzles)
- Sicilian: Closed 7 (17 puzzles)
- Sicilian: Closed, 2...Nc6 3.Bb5 (30 puzzles)
- Sicilian: Closed, 2...Nc6 3.Bb5 Nd4 (12 puzzles)
- Sicilian: Closed, Grand Prix, 3...d6 (19 puzzles)
- Sicilian: Closed, Grand Prix, 3...d6 4.Nf3 g6 (5 puzzles)
- Sicilian: Closed, Grand Prix, 3...e6 (16 puzzles)
- Sicilian: Closed, Grand Prix, 3...g6 (5 puzzles)
- Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bb5 (2 puzzles)
- Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bb5 Nd4 (3 puzzles)
- Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bb5 Nd4 6.O O (3 puzzles)
- Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bc4 (1 puzzle)
- Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bc4 e6 (1 puzzle)
B24
- Sicilian Defense: Closed (10 puzzles)
- Sicilian Defense: Closed 2 (8 puzzles)
- Sicilian Defense: Closed, Fianchetto Variation (19 puzzles)
- Sicilian: Closed, 3.g3 g6 2 (8 puzzles)
- Sicilian: Closed, 3.g3 g6, 5.d3 (8 puzzles)
- Sicilian: Closed, 3.g3 g6, 5.d3 e6 (1 puzzle)
- Sicilian: Closed, 3.g3 g6, 5.d3 e6 6.f4 (2 puzzles)
- Sicilian: Closed, 3.g3 g6, 5.f4 (1 puzzle)
B31
- Sicilian Defense: Nyezhmetdinov Rossolimo Attack, Fianchetto Variation (11 puzzles)
- Sicilian: Rossolimo, 3...g6 4.Bxc6 (5 puzzles)
- Sicilian: Rossolimo, 3...g6 4.Nc3 (8 puzzles)
- Sicilian: Rossolimo, 3...g6 4.O O (2 puzzles)
- Sicilian: Rossolimo, 3...g6 4.O O Bg7 5.c3 (0 puzzles)
- Sicilian: Rossolimo, 3...g6 4.O O Bg7 5.Re1 (1 puzzle)
- Sicilian: Rossolimo, 3...g6 4.O O Bg7 5.Re1 e5 (0 puzzles)
- Sicilian: Rossolimo, 3...g6 4.O O Bg7 5.Re1 Nf6 (1 puzzle)
- Sicilian: Rossolimo, 3...g6 4.O O Bg7 5.Re1 Nf6 6.c3 (0 puzzles)
- Sicilian: Rossolimo, 3...g6 4.O O Bg7 5.Re1 Nf6 6.c3 O O 7.d4 (0 puzzles)
B32
- Sicilian Defense: Accelerated Dragon (75 puzzles)
- Sicilian Defense: Franco Sicilian Variation (28 puzzles)
- Sicilian Defense: Godiva Variation (10 puzzles)
- Sicilian Defense: Kalashnikov Variation (17 puzzles)
- Sicilian Defense: Löwenthal Variation (79 puzzles)
- Sicilian Defense: Open (371 puzzles)
- Sicilian Defense: Open 2 (385 puzzles)
- Sicilian Defense: Open 3 (350 puzzles)
- Sicilian: Loewenthal, 5...a6 (8 puzzles)
- Sicilian: Loewenthal, 5...a6, 8.Qd1 (2 puzzles)
- Sicilian: Loewenthal, 5.Nb5 (31 puzzles)
- Sicilian: Loewenthal, Kalashnikov, 6.c4 (6 puzzles)
- Sicilian: Loewenthal, Kalashnikov, 6.c4 Be7 (2 puzzles)
- Sicilian: Loewenthal, Kalashnikov, 6.c4 Be7 7.N1c3 (1 puzzle)
- Sicilian: Loewenthal, Kalashnikov, 6.N1c3 (11 puzzles)
- Sicilian: Loewenthal, Kalashnikov, 6.N1c3 a6 7.Na3 b5 (5 puzzles)
- Sicilian: Open, 2...Nc6, 4...d6 (48 puzzles)
B33
- Sicilian Defense: Four Knights Variation, Cobra Variation (3 puzzles)
- Sicilian Defense: Lasker Pelikan Variation (29 puzzles)
- Sicilian Defense: Lasker Pelikan Variation, Exchange Variation (4 puzzles)
- Sicilian Defense: Lasker Pelikan Variation, Retreat Variation (8 puzzles)
- Sicilian Defense: Lasker Pelikan Variation, Schlechter Variation (5 puzzles)
- Sicilian Defense: Lasker Pelikan Variation, Sveshnikov Variation 2 (7 puzzles)
- Sicilian Defense: Lasker Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation (4 puzzles)
- Sicilian Defense: Lasker Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation (3 puzzles)
- Sicilian Defense: Open (70 puzzles)
- Sicilian: Pelikan, 7.Bg5 (8 puzzles)
- Sicilian: Pelikan, 7.Bg5 a6 (7 puzzles)
- Sicilian: Pelikan, 7.Bg5 a6 8.Na3 (7 puzzles)
- Sicilian: Pelikan, 7.Nd5 (7 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Bxf6 (3 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Bxf6 gxf6 (3 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Bxf6 gxf6 10.Nd5 (3 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Bxf6 gxf6 10.Nd5 Bg7 11.Bd3 (2 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7 (4 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3 (3 puzzles)
- Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3 O O (3 puzzles)
- Sicilian: Pelikan, Haberditz Variation (1 puzzle)
- Sicilian: Pelikan/Sveshnikov, 6.Nbd5 (20 puzzles)
- Sicilian: Pelikan/Sveshnikov, Pelikan Variation (19 puzzles)
B34
- Sicilian Defense: Accelerated Dragon, Exchange Variation (11 puzzles)
- Sicilian Defense: Accelerated Dragon, Modern Variation (35 puzzles)
- Sicilian: Accelerated Fianchetto, 5.Bc4 (9 puzzles)
- Sicilian: Accelerated Fianchetto, 5.Be3 (9 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 5...Bg7 (47 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 5...Nf6 (6 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 5...Nf6 6.Nxc6 bxc6 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 (42 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 d6 (5 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 (27 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 7.Be2 (5 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 7.f3 (9 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 7.Nxc6 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 7.Nxc6 bxc6 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 7.Nxc6 bxc6 8.e5 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 6.Be3 Nf6 7.Nxc6 bxc6 8.e5 Ng8 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 6.Nb3 (4 puzzles)
B35
- Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation (13 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O (10 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.Bb3 (4 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.Bb3 d6 (3 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.Bb3 d6 9.f3 (4 puzzles)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.Bb3 d6 9.f3 Bd7 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.Bb3 d6 9.h3 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.Bb3 d6 9.h3 Bd7 (1 puzzle)
- Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 O O 8.O O (4 puzzles)
B38
- Sicilian Defense: Accelerated Dragon, Maróczy Bind (6 puzzles)
- Sicilian: Maroczy Bind, 6.Be3 Nf6 (5 puzzles)
- Sicilian: Maroczy Bind, 6.Be3 Nf6 7.Nc3 (5 puzzles)
- Sicilian: Maroczy Bind, 6.Be3 Nf6 7.Nc3 d6 (4 puzzles)
- Sicilian: Maroczy Bind, 6.Be3 Nf6 7.Nc3 d6 8.Be2 (2 puzzles)
- Sicilian: Maroczy Bind, 7.Nc3 O O (3 puzzles)
- Sicilian: Maroczy Bind, 7.Nc3 O O 8.Be2 (2 puzzles)
- Sicilian: Maroczy Bind, 7.Nc3 O O 8.Be2 d6 (2 puzzles)
- Sicilian: Maroczy Bind, 7.Nc3 O O 8.Be2 d6 9.O O (2 puzzles)
- Sicilian: Maroczy Bind, 7.Nc3 O O 8.Be2 d6 9.O O a6 (1 puzzle)
- Sicilian: Maroczy Bind, 7.Nc3 O O 8.Be2 d6 9.O O Bd7 (1 puzzle)
B40
- Sicilian Defense: Delayed Alapin Variation (29 puzzles)
- Sicilian Defense: Drazic Variation (6 puzzles)
- Sicilian Defense: Four Knights Variation (49 puzzles)
- Sicilian Defense: Four Knights Variation, Exchange Variation (1 puzzle)
- Sicilian Defense: French Variation (344 puzzles)
- Sicilian Defense: French Variation, Normal (42 puzzles)
- Sicilian Defense: French Variation, Open (209 puzzles)
- Sicilian Defense: French Variation, Westerinen Attack (5 puzzles)
- Sicilian Defense: Kramnik Variation (16 puzzles)
- Sicilian Defense: Marshall Counterattack (22 puzzles)
- Sicilian Defense: Pin Variation (12 puzzles)
- Sicilian Defense: Smith Morra Gambit Deferred (6 puzzles)
- Sicilian: 2...e6 3.d3 (3 puzzles)
- Sicilian: 2...e6 3.d4 (255 puzzles)
- Sicilian: 2...e6 3.g3 (8 puzzles)
- Sicilian: 2...e6 3.Nc3 (43 puzzles)
- Sicilian: 2...e6 3.Nc3 Nc6 (52 puzzles)
- Sicilian: Open, 2...e6, 4.Nxd4 (193 puzzles)
- Sicilian: Open, 2...e6, 4.Nxd4 d6 (6 puzzles)
- Sicilian: Open, 2...e6, 4.Nxd4 Nf6 5.Nc3 (37 puzzles)
B45
- Sicilian Defense: Taimanov Variation, Normal Variation (87 puzzles)
- Sicilian: Taimanov, Four Knights, 6.Be3 (15 puzzles)
- Sicilian: Taimanov, Four Knights, 6.Be3 Bb4 (12 puzzles)
- Sicilian: Taimanov, Four Knights, 6.Be3 Bb4 7.Bd3 (3 puzzles)
- Sicilian: Taimanov, Four Knights, 6.g3 (1 puzzle)
- Sicilian: Taimanov, Four Knights, 6.Ndb5 (9 puzzles)
- Sicilian: Taimanov, Four Knights, 6.Ndb5 Bb4 (2 puzzles)
- Sicilian: Taimanov, Four Knights, 6.Ndb5 d6 (1 puzzle)
- Sicilian: Taimanov, Four Knights, 6.Ndb5 d6 7.Bf4 (1 puzzle)
- Sicilian: Taimanov, Four Knights, 6.Nxc6 bxc6 7.e5 (1 puzzle)
- Sicilian: Taimanov, Four Knights, 6.Nxc6 bxc6 7.e5 Nd5 (1 puzzle)
- Sicilian: Taimanov, Four Knights, 6.Nxc6 bxc6 7.e5 Nd5 8.Ne4 (1 puzzle)
- Sicilian: Taimanov, Four Knights, 6.Nxc6 bxc6 7.e5 Nd5 8.Ne4 Qc7 (1 puzzle)
B54
- Sicilian Defense: Dragon Variation, Accelerated Dragon (3 puzzles)
- Sicilian Defense: Modern Variations, Main Line (186 puzzles)
- Sicilian Defense: Prins Variation (6 puzzles)
- Sicilian: Open, 2...d6 (247 puzzles)
- Sicilian: Open, 2...d6, 4...a6 (11 puzzles)
- Sicilian: Open, 2...d6, 4...e5 (15 puzzles)
- Sicilian: Open, 2...d6, 4...Nf6 5.Bd3 (6 puzzles)
- Sicilian: Prins (Moscow), 5...a6 (1 puzzle)
B56
- Sicilian Defense: Classical Variation (40 puzzles)
- Sicilian Defense: Kupreichik Variation (2 puzzles)
- Sicilian Defense: Venice Attack (1 puzzle)
- Sicilian: Open, 2...d6, 5.Nc3 (177 puzzles)
- Sicilian: Open, 2...d6, 5.Nc3 e5 (6 puzzles)
- Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.Be3 (20 puzzles)
- Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f3 (2 puzzles)
- Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f3 e5 (1 puzzle)
- Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f4 (1 puzzle)
B76
- Sicilian Defense: Dragon Variation, Yugoslav Attack (11 puzzles)
- Sicilian Defense: Dragon Variation, Yugoslav Attack 2 (10 puzzles)
- Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line (5 puzzles)
- Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation (3 puzzles)
- Sicilian: Dragon, Yugoslav, 7.f3 O O 8.Qd2 (10 puzzles)
- Sicilian: Dragon, Yugoslav, 9.g4 Be6 (1 puzzle)
- Sicilian: Dragon, Yugoslav, 9.O O O d5 (3 puzzles)
- Sicilian: Dragon, Yugoslav, 9.O O O d5 10.exd5 (1 puzzle)
- Sicilian: Dragon, Yugoslav, 9.O O O d5 10.Qe1 (1 puzzle)
B90
- Sicilian Defense: Najdorf Variation (111 puzzles)
- Sicilian Defense: Najdorf Variation, Adams Attack (5 puzzles)
- Sicilian Defense: Najdorf Variation, English Attack (23 puzzles)
- Sicilian Defense: Najdorf Variation, English Attack, Anti English (4 puzzles)
- Sicilian Defense: Najdorf Variation, Freak Attack (1 puzzle)
- Sicilian Defense: Najdorf Variation, Lipnitsky Attack (18 puzzles)
- Sicilian: Najdorf, 6.a4 (7 puzzles)
- Sicilian: Najdorf, 6.a4 e5 (5 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 (11 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 (10 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 (4 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 (4 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 (1 puzzle)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 2 (3 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 b5 (1 puzzle)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O O (1 puzzle)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O O 10.O O O (2 puzzles)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O O 10.O O O Nbd7 (1 puzzle)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 (1 puzzle)
- Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.Qd2 (1 puzzle)
- Sicilian: Najdorf, 6.f3 (3 puzzles)
B97
- Sicilian Defense: Najdorf Variation, Poisoned Pawn Accepted (0 puzzles)
- Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation (2 puzzles)
- Sicilian: Najdorf, Poisoned Pawn Accepted (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 10.e5 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 10.e5 dxe5 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 10.e5 dxe5 11.fxe5 Nfd7 12.Bc4 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 10.e5 dxe5 11.fxe5 Nfd7 12.Bc4 Bb4 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 10.f5 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 10.f5 Nc6 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, 8.Qd2 (1 puzzle)
- Sicilian: Najdorf, Poisoned Pawn, 9.Rb1 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, Main Line (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5: 15.Ne4 (0 puzzles)
- Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5: 15.Ne4 Be7 (0 puzzles)
C01
- French Defense: Exchange Variation (127 puzzles)
- French Defense: Exchange Variation, Monte Carlo Variation (25 puzzles)
- French Defense: Exchange Variation, Svenonius Variation (8 puzzles)
- French: Exchange (117 puzzles)
- French: Exchange, 3...Qxd5 (12 puzzles)
- French: Exchange, 4.Bd3 (24 puzzles)
- French: Exchange, 4.Bd3 Bd6 (13 puzzles)
- French: Exchange, 4.Bd3 Nc6 (2 puzzles)
- French: Exchange, 4.c4 Nf6 (11 puzzles)
- French: Exchange, 4.c4 Nf6 2 (14 puzzles)
- French: Exchange, 4.Nc3 (26 puzzles)
- French: Exchange, 4.Nc3 Nf6 (18 puzzles)
- French: Exchange, 4.Nc3 Nf6 5.Nf3 (21 puzzles)
- French: Exchange, 4.Nf3 (131 puzzles)
- French: Exchange, 4.Nf3 Bd6 (28 puzzles)
- French: Exchange, 4.Nf3 Bd6 5.Bd3 (21 puzzles)
- French: Exchange, 4.Nf3 Bd6 5.Bd3 Nf6 (9 puzzles)
- French: Exchange, 4.Nf3 Bd6 5.c4 (1 puzzle)
- French: Exchange, 4.Nf3 Nf6 (62 puzzles)
- French: Exchange, 4.Nf3 Nf6 5.Bd3 (11 puzzles)
- French: Exchange, Svenonius Variation (8 puzzles)
C02
- French Defense: Advance Variation (193 puzzles)
- French Defense: Advance Variation 2 (108 puzzles)
- French Defense: Advance Variation 3 (75 puzzles)
- French Defense: Advance Variation 4 (228 puzzles)
- French Defense: Advance Variation, Euwe Variation (16 puzzles)
- French Defense: Advance Variation, Extended Bishop Swap (3 puzzles)
- French Defense: Advance Variation, Lputian Variation (1 puzzle)
- French Defense: Advance Variation, Main Line (4 puzzles)
- French Defense: Advance Variation, Milner Barry Gambit (3 puzzles)
- French Defense: Advance Variation, Nimzowitsch Attack (3 puzzles)
- French Defense: Advance Variation, Nimzowitsch Gambit (1 puzzle)
- French Defense: Advance Variation, Nimzowitsch System (65 puzzles)
- French Defense: Advance Variation, Paulsen Attack (59 puzzles)
- French Defense: Advance Variation, Ruisdonk Gambit (2 puzzles)
- French Defense: Advance Variation, Wade Variation (3 puzzles)
- French: Advance, 4.c3 Qb6 (14 puzzles)
- French: Advance, 5.Nf3 Qb6 (33 puzzles)
- French: Advance, 5.Nf3 Qb6 6.a3 Bd7 (3 puzzles)
- French: Advance, 5.Nf3 Qb6 6.Be2 (9 puzzles)
- French: Advance, 5.Nf3 Qb6 6.Be2 cxd4 7.cxd4 (6 puzzles)
- French: Advance, Euwe, 6.a3 (4 puzzles)
- French: Advance, Euwe, 6.Be2 (4 puzzles)
- French: Advance, Euwe, 6.Be2 Nge7 (0 puzzles)
- French: Advance, Wade, 6.Be2 (1 puzzle)
C04
- French Defense: Tarrasch Variation, Guimard Defense, Main Line (2 puzzles)
- French: Tarrasch, Guimard, 4.Ngf3 Nf6 5.e5 (2 puzzles)
- French: Tarrasch, Guimard, Main Line (2 puzzles)
- French: Tarrasch, Guimard, Main Line, 6.Be2 (1 puzzle)
- French: Tarrasch, Guimard, Main Line, 6.Be2 f6 (1 puzzle)
- French: Tarrasch, Guimard, Main Line, 6.c3 (1 puzzle)
C05
- French Defense: Tarrasch Variation, Closed Variation (8 puzzles)
- French Defense: Tarrasch Variation, Closed Variation 2 (24 puzzles)
- French: Tarrasch, 5.Bd3 (9 puzzles)
- French: Tarrasch, Closed, 4...Nfd7 (14 puzzles)
- French: Tarrasch, Closed, 4.e5 (16 puzzles)
- French: Tarrasch, Closed, 5.c3 (3 puzzles)
- French: Tarrasch, Closed, 7.Ne2 (7 puzzles)
- French: Tarrasch, Closed, 7.Ngf3 (3 puzzles)
- French: Tarrasch, Closed, Nunn Korchnoi Gambit (0 puzzles)
C06
- French Defense: Tarrasch Variation, Closed Variation, Main Line (4 puzzles)
- French: Tarrasch, Closed, 8...f6 (2 puzzles)
- French: Tarrasch, Closed, 8...f6 9.exf6 (3 puzzles)
- French: Tarrasch, Closed, 8...f6 9.exf6 Nxf6 (2 puzzles)
- French: Tarrasch, Closed, 8...f6 9.exf6 Nxf6 10.O O Bd6 11.Nf3 (2 puzzles)
- French: Tarrasch, Closed, 8...f6 9.exf6, 11...O O (1 puzzle)
- French: Tarrasch, Closed, 8...f6 9.exf6, 11...Qc7 (1 puzzle)
- French: Tarrasch, Closed, 8...f6 9.exf6, 11...Qc7 12.Bg5 (1 puzzle)
- French: Tarrasch, Closed, 8...Qb6 (1 puzzle)
- French: Tarrasch, Closed, 8...Qb6 9.Nf3 (2 puzzles)
C07
- French Defense: Tarrasch Variation, Chistyakov Defense (6 puzzles)
- French Defense: Tarrasch Variation, Open System (36 puzzles)
- French Defense: Tarrasch Variation, Open System, Euwe Keres Line (7 puzzles)
- French: Tarrasch, Open, 4.exd5 (13 puzzles)
- French: Tarrasch, Open, 4.Ngf3 a6 (1 puzzle)
- French: Tarrasch, Open, 4.Ngf3 Nc6 (2 puzzles)
C08
- French Defense: Tarrasch Variation, Open System (7 puzzles)
- French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3 (4 puzzles)
- French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3 Nf6 (2 puzzles)
- French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3 Nf6, 7.Bxd7 (1 puzzle)
- French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3 Nf6, Main Line (1 puzzle)
C11
- French Defense: Burn Variation (30 puzzles)
- French Defense: Classical Variation (62 puzzles)
- French Defense: Classical Variation, Swiss Variation (8 puzzles)
- French Defense: Henneberger Variation (1 puzzle)
- French Defense: Steinitz Variation (5 puzzles)
- French Defense: Steinitz Variation, Boleslavsky Variation (3 puzzles)
- French: Burn Variation (6 puzzles)
- French: Burn, 5.Nxe4 (15 puzzles)
- French: Burn, 5.Nxe4 Be7 (12 puzzles)
- French: Burn, 5.Nxe4 Nbd7 (3 puzzles)
- French: Burn, 5.Nxe4 Nbd7 6.Nf3 (3 puzzles)
- French: Burn, 5.Nxe4 Nbd7 6.Nf3 Be7 (1 puzzle)
- French: Burn, 5.Nxe4 Nbd7 6.Nf3 Be7 2 (3 puzzles)
- French: Burn, 6.Bxf6 Bxf6 (4 puzzles)
- French: Steinitz, 5.f4 (8 puzzles)
- French: Steinitz, 5.f4 c5 (7 puzzles)
- French: Steinitz, 5.Nf3 (14 puzzles)
- French: Steinitz, 5.Nf3 c5 (14 puzzles)
- French: Steinitz, Boleslavsky, 7...a6 (1 puzzle)
- French: Steinitz, Boleslavsky, 7...a6 8.Qd2 b5 (1 puzzle)
- French: Steinitz, Boleslavsky, 7...cxd4 (0 puzzles)
- French: Steinitz, Boleslavsky, 7...cxd4 8.Nxd4 Qb6 (0 puzzles)
C15
- French Defense: MacCutcheon Variation, Wolf Gambit (1 puzzle)
- French Defense: Winawer Variation (69 puzzles)
- French Defense: Winawer Variation, Alekhine Maróczy Gambit (3 puzzles)
- French Defense: Winawer Variation, Fingerslip Variation (5 puzzles)
- French Defense: Winawer Variation, Winckelmann Riemer Gambit (3 puzzles)
- French: Winawer, 4.a3 Bxc3+ (3 puzzles)
- French: Winawer, 4.a3 Bxc3+ 2 (3 puzzles)
- French: Winawer, 4.a3 Bxc3+ 5.bxc3 dxe4 (3 puzzles)
- French: Winawer, 4.a3 Bxc3+ 5.bxc3 dxe4 6.Qg4 (2 puzzles)
- French: Winawer, Alekhine Gambit, 4...Nf6 (2 puzzles)
- French: Winawer, Mueller Zhuravlev Gambit (1 puzzle)
C17
- French Defense: Winawer Variation, Advance Variation (14 puzzles)
- French Defense: Winawer Variation, Advance Variation 2 (21 puzzles)
- French Defense: Winawer Variation, Bogoljubov Variation (2 puzzles)
- French Defense: Winawer Variation, Maróczy Wallis Variation (1 puzzle)
- French: Winawer, 5.a3 cxd4 (2 puzzles)
- French: Winawer, Bogoljubow, 5...Ne7 (1 puzzle)
- French: Winawer, Bogoljubow, 5...Ne7 6.Nb5 (0 puzzles)
- French: Winawer, Russian, 6.dxc5 (1 puzzle)
C18
- French Defense: Winawer Variation, Advance Variation (10 puzzles)
- French Defense: Winawer Variation, Classical Variation (3 puzzles)
- French: Winawer, 5...Bxc3+ (10 puzzles)
- French: Winawer, 6...Ne7 7.h4 (0 puzzles)
- French: Winawer, 6...Ne7 7.h4 Nbc6 2 (0 puzzles)
- French: Winawer, 6...Ne7 7.Qg4 O O (2 puzzles)
- French: Winawer, 6...Ne7 7.Qg4 O O 8.Bd3 (1 puzzle)
- French: Winawer, 6...Ne7 7.Qg4 O O 8.Bd3 Nbc6 (1 puzzle)
- French: Winawer, 6...Qc7 7.Qg4 (3 puzzles)
- French: Winawer, 6...Qc7 7.Qg4 f5 (1 puzzle)
C42
- Russian Game (49 puzzles)
- Russian Game 2 (393 puzzles)
- Russian Game 3 (46 puzzles)
- Russian Game 4 (881 puzzles)
- Russian Game 5 (74 puzzles)
- Russian Game: 3.d3 (33 puzzles)
- Russian Game: 5.Qe2, Queenswap (2 puzzles)
- Russian Game: Classical Attack (16 puzzles)
- Russian Game: Classical Attack, Chigorin Variation, Browne Attack (0 puzzles)
- Russian Game: Classical Attack, Closed Variation (1 puzzle)
- Russian Game: Classical Attack, Jaenisch Variation (0 puzzles)
- Russian Game: Classical Attack, Marshall Variation (4 puzzles)
- Russian Game: Classical Attack, Staunton Variation (0 puzzles)
- Russian Game: Classical, 5...d5 (12 puzzles)
- Russian Game: Classical, 6.Bd3 (9 puzzles)
- Russian Game: Classical, 6.Bd3 Be7 (1 puzzle)
- Russian Game: Classical, 6.Bd3 Be7 7.O O Nc6 (0 puzzles)
- Russian Game: Cozio Attack (14 puzzles)
- Russian Game: Damiano Variation (40 puzzles)
- Russian Game: French Attack (2 puzzles)
- Russian Game: Italian Variation (274 puzzles)
- Russian Game: Kaufmann Attack (0 puzzles)
- Russian Game: Nimzowitsch Attack (10 puzzles)
- Russian Game: Paulsen Attack (5 puzzles)
- Russian Game: Stafford Gambit (232 puzzles)
- Russian Game: Stafford Gambit 2 (200 puzzles)
- Russian Game: Three Knights Game (232 puzzles)
- Russian Three Knights Game (40 puzzles)
C44
- King's Knight Opening: Normal Variation (2843 puzzles)
- King's Pawn Game: Dresden Opening (7 puzzles)
- King's Pawn Game: Tayler Opening (6 puzzles)
- King's Pawn Game: Tayler Opening, Inverted Hanham (1 puzzle)
- Open Game: Inverted Philidor (16 puzzles)
- Open Game: Inverted Philidor 3 (13 puzzles)
- Open Game: Inverted Philidor, 4.Be2 (5 puzzles)
- Ponziani Opening (88 puzzles)
- Ponziani Opening: Jaenisch Counterattack (53 puzzles)
- Ponziani: 3...Nf6 (41 puzzles)
- Ponziani: 3...Nf6 4.d4 exd4 (30 puzzles)
- Ponziani: 3...Nf6 4.d4 Nxe4 (11 puzzles)
- Scotch Gambit (11 puzzles)
- Scotch Gambit: 5.c3 (27 puzzles)
- Scotch Game (564 puzzles)
- Scotch Game 2 (641 puzzles)
- Scotch Game: Benima Defense (16 puzzles)
- Scotch Game: Göring Gambit (36 puzzles)
- Scotch Game: Göring Gambit, Double Pawn Sacrifice (27 puzzles)
- Scotch Game: Haxo Gambit (59 puzzles)
- Scotch Game: Lolli Variation (9 puzzles)
- Scotch Game: Scotch Gambit (144 puzzles)
- Scotch Game: Scotch Gambit, Advance Variation (42 puzzles)
- Scotch Game: Scotch Gambit, Dubois Réti Defense (92 puzzles)
- Scotch Game: Scotch Gambit, Kingside Variation (12 puzzles)
- Scotch Game: Scotch Gambit, London Defense (17 puzzles)
- Scotch Game: Scotch Gambit, Sarratt Variation (11 puzzles)
- Scotch: 3...d6 (42 puzzles)
- Scotch: Goring Gambit, 4...dxc3 (24 puzzles)
- Scotch: Goring Gambit, 4...dxc3 5.Bc4 cxb2 6.Bxb2 (16 puzzles)
- Scotch: Goring Gambit, 4...dxc3 5.Nxc3 (9 puzzles)
C47
- Four Knights Game (240 puzzles)
- Four Knights Game: Italian Variation (141 puzzles)
- Four Knights Game: Italian Variation, Noa Gambit (11 puzzles)
- Four Knights Game: Scotch Variation (63 puzzles)
- Four Knights Game: Scotch Variation Accepted (45 puzzles)
- Four Knights Game: Scotch Variation, Belgrade Gambit (10 puzzles)
- Four Knights: Belgrade Gambit, 5...Nb4 (2 puzzles)
- Four Knights: Scotch, 4...d6 (6 puzzles)
- Four Knights: Scotch, 4...exd4 5.Nxd4 (63 puzzles)
- Four Knights: Scotch, 4...exd4 5.Nxd4 Bb4 (24 puzzles)
- Four Knights: Scotch, 4...exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 (11 puzzles)
- Four Knights: Scotch, 4...exd4 5.Nxd4 Bc5 (17 puzzles)
- Four Knights: Scotch, 4...exd4 5.Nxd4 d6 (9 puzzles)
- Four Knights: Scotch, Main Line (4 puzzles)
- Four Knights: Scotch, Main Line, 7...d5 (3 puzzles)
- Four Knights: Scotch, Main Line, 7...d5 8.exd5 cxd5 (1 puzzle)
- Four Knights: Scotch, Main Line, 8.exd5 cxd5 9.O O O O (1 puzzle)
C55
- Italian Game: Scotch Gambit (26 puzzles)
- Italian Game: Scotch Gambit, Janowski Defense (9 puzzles)
- Italian Game: Scotch Gambit, Max Lange Attack (17 puzzles)
- Italian Game: Scotch Gambit, Max Lange Attack, Spielmann Defense (5 puzzles)
- Italian Game: Two Knights Defense (445 puzzles)
- Italian Game: Two Knights Defense, Max Lange Attack (14 puzzles)
- Italian Game: Two Knights Defense, Max Lange Attack, Loman Defense (1 puzzle)
- Italian Game: Two Knights Defense, Modern Bishop's Opening (91 puzzles)
- Italian Game: Two Knights Defense, Open Variation (73 puzzles)
- Italian Game: Two Knights Defense, Perreux Variation (10 puzzles)
- Two Knights: 4.d3 Be7 (11 puzzles)
- Two Knights: 4.d3 Be7 5.c3 (7 puzzles)
- Two Knights: 4.d3 Be7 5.O O (5 puzzles)
- Two Knights: 4.d3 Be7 5.O O O O (5 puzzles)
- Two Knights: 4.d3 Be7 5.O O O O 6.Re1 (1 puzzle)
- Two Knights: 4.d3 h6 (15 puzzles)
- Two Knights: 4.d4 exd4 5.Nxd4 (13 puzzles)
- Two Knights: Max Lange Attack (17 puzzles)
- Two Knights: Max Lange, 6.e5 d5 (4 puzzles)
- Two Knights: Modern, 5.e5 d5 (11 puzzles)
- Two Knights: Modern, Main Line (4 puzzles)
- Two Knights: Modern, Main Line, 8.Bxc6 bxc6 9.O O Bc5 (2 puzzles)
C57
- Italian Game: Two Knights Defense, Fried Liver Attack (14 puzzles)
- Italian Game: Two Knights Defense, Fritz Variation (10 puzzles)
- Italian Game: Two Knights Defense, Knight Attack (181 puzzles)
- Italian Game: Two Knights Defense, Knight Attack, Normal Variation (112 puzzles)
- Italian Game: Two Knights Defense, Ponziani Steinitz Gambit (17 puzzles)
- Italian Game: Two Knights Defense, Traxler Counterattack (46 puzzles)
- Italian Game: Two Knights Defense, Traxler Counterattack, Bishop Sacrifice Line (18 puzzles)
- Italian Game: Two Knights Defense, Traxler Counterattack, King March Line (3 puzzles)
- Italian Game: Two Knights Defense, Traxler Counterattack, Knight Sacrifice Line (24 puzzles)
- Italian Game: Two Knights Defense, Ulvestad Variation (11 puzzles)
- Two Knights: 4.Ng5 d5 5.exd5 Nxd5 (41 puzzles)
- Two Knights: Fegatello, Polerio Defence (1 puzzle)
- Two Knights: Traxler, 5.Nxf7 & 6.Kxf2 (9 puzzles)
C67
- Ruy Lopez: Berlin Defense, Berlin Wall (0 puzzles)
- Ruy Lopez: Berlin Defense, l'Hermet Variation (4 puzzles)
- Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense (1 puzzle)
- Ruy Lopez: Berlin Defense, Minckwitz Variation (1 puzzle)
- Ruy Lopez: Berlin Defense, Rio de Janeiro Variation (1 puzzle)
- Ruy Lopez: Berlin Defense, Rio Gambit Accepted (22 puzzles)
- Spanish: Open Berlin, 5.d4 (10 puzzles)
- Spanish: Open Berlin, 5.d4 Nd6 6.Bxc6 (3 puzzles)
- Spanish: Open Berlin, 5.d4 Nd6 6.Bxc6 dxc6 (2 puzzles)
- Spanish: Open Berlin, 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 (1 puzzle)
- Spanish: Open Berlin, 5.d4 Nd6 Queenswap (1 puzzle)
- Spanish: Open Berlin, 5.d4 Nd6 Queenswap, 9.Nc3 (1 puzzle)
- Spanish: Open Berlin, 5.d4 Nd6 Queenswap, 9.Nc3 h6 (0 puzzles)
- Spanish: Open Berlin, 5.d4 Nd6 Queenswap, 9.Nc3 Ke8 (1 puzzle)
- Spanish: Open Berlin, 5.Re1 (7 puzzles)
- Spanish: Open Berlin, 5.Re1 Nd6 6.Nxe5 (2 puzzles)
C89
- Ruy Lopez: Marshall Attack (2 puzzles)
- Ruy Lopez: Marshall Attack, Main Line (1 puzzle)
- Ruy Lopez: Marshall Attack, Main Line, Spassky Variation (0 puzzles)
- Ruy Lopez: Marshall Attack, Modern Main Line (1 puzzle)
- Ruy Lopez: Marshall Attack, Modern Variation (1 puzzle)
- Ruy Lopez: Marshall Attack, Original Marshall Attack (2 puzzles)
- Ruy Lopez: Marshall Attack, Re3 Variation (0 puzzles)
- Ruy Lopez: Marshall Attack, Steiner Variation (0 puzzles)
- Spanish: Marshall, 11.Rxe5 (3 puzzles)
- Spanish: Marshall, 12.Bxd5 (0 puzzles)
- Spanish: Marshall, 9.exd5 (2 puzzles)
- Spanish: Marshall, 9.exd5 Nxd5 (3 puzzles)
- Spanish: Marshall, 9.exd5 Nxd5 10.Nxe5 (3 puzzles)
- Spanish: Marshall, 9.exd5 Nxd5 10.Nxe5 Nxe5 (3 puzzles)
- Spanish: Marshall, Main Line (12.d4 Bd6) (1 puzzle)
- Spanish: Marshall, Main Line, 13.Re1 (1 puzzle)
- Spanish: Marshall, Main Line, 13.Re1 Qh4 (1 puzzle)
- Spanish: Marshall, Main Line, 13.Re1 Qh4 14.g3 (1 puzzle)
- Spanish: Marshall, Main Line, 15.Be3 (0 puzzles)
- Spanish: Marshall, Main Line, 15.Be3 Bg4 (0 puzzles)
- Spanish: Marshall, Main Line, 15.Be3 Bg4 16.Qd3 (0 puzzles)
- Spanish: Marshall, Main Line, 15.Be3 Bg4 16.Qd3 Rae8 (0 puzzles)
- Spanish: Marshall, Main Line, 15.Re4 (1 puzzle)
- Spanish: Marshall, Main Line, 16.Qd3 Rae8 17.Nd2 (0 puzzles)
- Spanish: Marshall, Main Line, Classical Variation (0 puzzles)
- Spanish: Marshall, Main Line, Classical, 18.a4 (0 puzzles)
C95
- Ruy Lopez: Closed, Breyer (1 puzzle)
- Ruy Lopez: Closed, Breyer Defense 2 (0 puzzles)
- Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid (1 puzzle)
- Spanish: Closed, Breyer, 10.d4 Nbd7 11.Nbd2 (1 puzzle)
- Spanish: Closed, Breyer, 10.d4 Nbd7 11.Nbd2 Bb7 (1 puzzle)
- Spanish: Closed, Breyer, 10.d4 Nbd7 11.Nbd2 Bb7 12.a4 (1 puzzle)
D08
- QGD: Albin, 3.dxe5 (81 puzzles)
- QGD: Albin, 3.dxe5 d4 (72 puzzles)
- QGD: Albin, 4.Nf3 Nc6 (42 puzzles)
- QGD: Albin, 4.Nf3 Nc6 5.a3 (12 puzzles)
- QGD: Albin, 4.Nf3 Nc6 5.a3 Bg4 (8 puzzles)
- QGD: Albin, 4.Nf3 Nc6 5.a3 Bg4 6.Nbd2 (7 puzzles)
- QGD: Albin, Alapin, 5...Bg4 (3 puzzles)
- Queen's Gambit Declined: Albin Countergambit (130 puzzles)
- Queen's Gambit Declined: Albin Countergambit, Modern Line (10 puzzles)
- Queen's Gambit Declined: Albin Countergambit, Normal Line (52 puzzles)
- Queen's Gambit Declined: Albin Countergambit, Tartakower Defense (6 puzzles)
D10
- Slav Defense (299 puzzles)
- Slav Defense 2 (140 puzzles)
- Slav Defense 3 (12 puzzles)
- Slav Defense: Diemer Gambit (3 puzzles)
- Slav Defense: Exchange Variation (48 puzzles)
- Slav Defense: Exchange Variation, Boor Attack (1 puzzle)
- Slav Defense: Winawer Countergambit (4 puzzles)
- Slav: 3.Bf4 (7 puzzles)
- Slav: 3.e3 (22 puzzles)
- Slav: 3.e3 Bf5 (9 puzzles)
- Slav: 3.e3 Nf6 (16 puzzles)
- Slav: 3.g3 (3 puzzles)
- Slav: 3.Nc3 dxc4 4.a4 (3 puzzles)
- Slav: 3.Nc3 Nf6 (115 puzzles)
- Slav: 3.Nc3 Nf6 4.Bg5 (25 puzzles)
- Slav: 3.Nc3 Nf6 4.e3 (21 puzzles)
- Slav: 3.Nc3 Nf6 4.e3 Bf5 (12 puzzles)
- Slav: Exchange (48 puzzles)
- Slav: Exchange, 4.Bf4 (10 puzzles)
- Slav: Exchange, 4.Nc3 (39 puzzles)
- Slav: Exchange, 4.Nc3 Nf6 (38 puzzles)
- Slav: Exchange, 4.Nc3 Nf6 5.Bf4 (16 puzzles)
- Slav: Exchange, 4.Nc3 Nf6 5.Bf4 Nc6 (5 puzzles)
- Slav: Exchange, 4.Nc3 Nf6 5.Bf4 Nc6 6.e3 (4 puzzles)
- Slav: Exchange, 4.Nc3 Nf6 5.Bf4 Nc6 6.e3 a6 (2 puzzles)
- Slav: Winawer Countergambit, 4.cxd5 (4 puzzles)
- Slav: Winawer Countergambit, 4.cxd5 cxd5 5.dxe5 (3 puzzles)
D13
- Slav Defense: Exchange Variation (6 puzzles)
- Slav: Exchange (4 puzzles)
- Slav: Exchange, 5.Nc3 (17 puzzles)
- Slav: Exchange, 5.Nc3 Bf5 (8 puzzles)
- Slav: Exchange, 5.Nc3 e6 (5 puzzles)
- Slav: Exchange, 5.Nc3 e6 6.Bf4 (3 puzzles)
- Slav: Exchange, 5.Nc3 Nc6 (10 puzzles)
- Slav: Exchange, 6.Bf4 (6 puzzles)
- Slav: Exchange, 6.Bf4 a6 7.e3 (1 puzzle)
- Slav: Exchange, 6.Bf4 a6 7.e3 Bg4 (1 puzzle)
- Slav: Exchange, 6.Bf4 e6 (2 puzzles)
- Slav: Exchange, 6.Bf4 e6 7.e3 (2 puzzles)
- Slav: Exchange, 6.Bf4 e6 7.e3 Bd6 (1 puzzle)
- Slav: Exchange, 6.Bf4 e6 7.e3 Bd6 8.Bxd6 Qxd6 (1 puzzle)
D31
- QGD: 3.Nc3 Bb4 (29 puzzles)
- QGD: 3.Nc3 Nc6 (7 puzzles)
- QGD: Alatortsev, 5.Bf4 (0 puzzles)
- QGD: Alatortsev, 5.Bf4 c6 (0 puzzles)
- QGD: Alatortsev, 5.Bf4 c6 6.e3 Bf5 (0 puzzles)
- QGD: Alatortsev, Exchange (0 puzzles)
- QGD: Alatortsev, Exchange 2 (0 puzzles)
- Queen's Gambit Declined: Charousek Variation (1 puzzle)
- Queen's Gambit Declined: Janowski Variation (5 puzzles)
- Queen's Gambit Declined: Queen's Knight Variation (277 puzzles)
- Semi Slav Defense: Accelerated Move Order (36 puzzles)
- Semi Slav Defense: Marshall Gambit (6 puzzles)
- Semi Slav Defense: Marshall Gambit, Main Line (1 puzzle)
- Semi Slav Defense: Noteboom Variation (3 puzzles)
- Semi Slav: 4.cxd5 2 (8 puzzles)
- Semi Slav: 4.cxd5 exd5 5.Nf3 (5 puzzles)
- Semi Slav: 4.cxd5 exd5 5.Nf3 Bf5 (4 puzzles)
- Semi Slav: 4.e3 Nf6 (10 puzzles)
- Semi Slav: 4.Nf3 (16 puzzles)
- Semi Slav: Marshall Gambit, 4...dxe4 (6 puzzles)
- Semi Slav: Marshall Gambit, 5.Nxe4 (6 puzzles)
- Semi Slav: Marshall Gambit, 5.Nxe4 Bb4+ (2 puzzles)
- Semi Slav: Marshall Gambit, 8.Be2 (1 puzzle)
- Semi Slav: Noteboom, 5.a4 (3 puzzles)
D35
- QGD: 3.Nc3 Nf6 4.e3 (34 puzzles)
- QGD: Exchange (49 puzzles)
- QGD: Exchange, 4...Nxd5 (11 puzzles)
- QGD: Exchange, 5.Bg5 Be7 (8 puzzles)
- QGD: Exchange, 5.Bg5 Be7 6.e3 (4 puzzles)
- QGD: Exchange, 5.Bg5 Be7 6.e3 h6 (0 puzzles)
- QGD: Exchange, 5.Bg5 Be7 6.e3 O O (3 puzzles)
- QGD: Exchange, 5.Bg5 Be7 6.Nf3 (2 puzzles)
- QGD: Exchange, 5.Bg5 c6 6.e3 (4 puzzles)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 (2 puzzles)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Bd3 (1 puzzle)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Bd3 Nbd7 (3 puzzles)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Bd3 Nbd7 8.Nf3 (2 puzzles)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Bd3 Nbd7 8.Nge2 (0 puzzles)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Bd3 O O 8.Nf3 (1 puzzle)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Nf3 Bf5 (1 puzzle)
- QGD: Exchange, 5.Bg5 c6 6.e3 Be7 7.Nf3 Bf5 8.Bd3 (1 puzzle)
- QGD: Exchange, 5.Bg5 c6 6.e3 Nbd7 (2 puzzles)
- QGD: Exchange, 5.Bg5 Nbd7 (8 puzzles)
- QGD: Exchange, 5.Bg5 Nbd7 6.e3 (4 puzzles)
- QGD: Exchange, 5.Bg5 Nbd7 6.Nf3 (0 puzzles)
- QGD: Exchange, 5.Nf3 (7 puzzles)
- QGD: Exchange, 5.Nf3 Be7 (0 puzzles)
- QGD: Exchange, 5.Nf3 Be7 6.Bf4 (0 puzzles)
- QGD: Exchange, 5.Nf3 c6 (2 puzzles)
- QGD: Exchange, 5.Nf3 Nbd7 (0 puzzles)
- Queen's Gambit Declined: Exchange Variation (43 puzzles)
- Queen's Gambit Declined: Exchange Variation, Positional Variation (7 puzzles)
- Queen's Gambit Declined: Exchange Variation, Positional Variation 2 (31 puzzles)
- Queen's Gambit Declined: Harrwitz Attack (19 puzzles)
- Queen's Gambit Declined: Normal Defense (245 puzzles)
D36
- QGD: Exchange, 6.Qc2 Be7 7.e3 Nbd7 8.Bd3 (2 puzzles)
- QGD: Exchange, 6.Qc2 Be7 7.Nf3 g6 (0 puzzles)
- QGD: Exchange, 6.Qc2 Be7 7.Nf3 g6 8.e3 (0 puzzles)
- QGD: Exchange, Main Line (1 puzzle)
- QGD: Exchange, Main Line, 9.Nf3 (1 puzzle)
- QGD: Exchange, Main Line, 9.Nf3 h6 10.Bh4 (1 puzzle)
- QGD: Exchange, Main Line, 9.Nf3 Re8 (1 puzzle)
- QGD: Exchange, Main Line, 9.Nf3 Re8 10.O O (1 puzzle)
- QGD: Exchange, Main Line, 9.Nf3 Re8 10.O O h6 (2 puzzles)
- QGD: Exchange, Main Line, 9.Nf3 Re8 10.O O h6 2 (1 puzzle)
- QGD: Exchange, Main Line, 9.Nf3 Re8 10.O O O h6 (1 puzzle)
- Queen's Gambit Declined: Exchange Variation, Reshevsky Variation (1 puzzle)
D43
- Semi Slav Defense (31 puzzles)
- Semi Slav Defense: Anti Moscow Gambit (2 puzzles)
- Semi Slav: Botvinnik (Anti Meran) (23 puzzles)
- Semi Slav: Botvinnik, 5...Be7 (9 puzzles)
- Semi Slav: Botvinnik, 5...Be7 6.e3 (11 puzzles)
- Semi Slav: Botvinnik, 5...Be7 6.e3 Nbd7 (6 puzzles)
- Semi Slav: Botvinnik, 5...Be7 6.e3 Nbd7 7.Bd3 (2 puzzles)
- Semi Slav: Botvinnik, 5...Be7 6.e3 O O (5 puzzles)
- Semi Slav: Moscow Variation (4 puzzles)
- Semi Slav: Moscow, 6.Bh4 Gambit Accepted (1 puzzle)
- Semi Slav: Moscow, 6.Bh4 Gambit, 7.e4 (1 puzzle)
- Semi Slav: Moscow, 6.Bh4 Gambit, Main Line (0 puzzles)
D44
- Semi Slav Defense Accepted (1 puzzle)
- Semi Slav Defense: Botvinnik Variation (0 puzzles)
- Semi Slav Defense: Botvinnik Variation 2 (0 puzzles)
- Semi Slav: Botvinnik, 6.a4 (1 puzzle)
- Semi Slav: Botvinnik, 6.e4 (0 puzzles)
- Semi Slav: Botvinnik, 7.e5 (0 puzzles)
- Semi Slav: Botvinnik, 9.Nxg5 (0 puzzles)
- Semi Slav: Botvinnik, Main Line (0 puzzles)
- Semi Slav: Botvinnik, Main Line, 12.g3 (0 puzzles)
- Semi Slav: Botvinnik, Main Line, 12.g3 c5 (0 puzzles)
- Semi Slav: Botvinnik, Main Line, 12.g3 c5 13.d5 Qb6 (0 puzzles)
D66
- QGD: Orthodox, Main Line, 8...a6 (0 puzzles)
- QGD: Orthodox, Main Line, 8...dxc4 (1 puzzle)
- QGD: Orthodox, Main Line, 8...dxc4 2 (1 puzzle)
- QGD: Orthodox, Main Line, Fianchetto, 11.O O (1 puzzle)
- Queen's Gambit Declined: Orthodox Defense, Bd3 Line (2 puzzles)
E04
- Catalan Opening: Open Defense (5 puzzles)
- Catalan Opening: Open Defense, Tarrasch Defense (1 puzzle)
- Catalan: Open, 5.Nf3 a6 (2 puzzles)
- Catalan: Open, 5.Nf3 a6 6.O O (1 puzzle)
- Catalan: Open, 5.Nf3 a6 6.O O Nc6 (1 puzzle)
- Catalan: Open, 5.Nf3 a6 6.O O Nc6 7.e3 (1 puzzle)
- Catalan: Open, 5.Nf3 Bb4+ (0 puzzles)
- Catalan: Open, 5.Nf3 c5 (2 puzzles)
- Catalan: Open, 5.Nf3 c5 6.O O (1 puzzle)
- Catalan: Open, 5.Nf3 c5 6.O O Nc6 (0 puzzles)
- Catalan: Open, 5.Nf3 c5 6.O O Nc6 7.Ne5 (0 puzzles)
- Catalan: Open, 5.Nf3 c5 6.O O Nc6 7.Qa4 (0 puzzles)
- Catalan: Open, 5.Nf3 c5 6.O O Nc6 7.Qa4 Bd7 (0 puzzles)
- Catalan: Open, 5.Nf3 Nc6 (1 puzzle)
- Catalan: Open, 5.Nf3 Nc6 6.O O (0 puzzles)
- Catalan: Open, 5.Nf3 Nc6 6.O O Rb8 (0 puzzles)
- Catalan: Open, 5.Nf3 Nc6 6.O O Rb8 7.Nc3 (0 puzzles)
E05
- Catalan: Open, Classical Main Line (1 puzzle)
- Catalan: Open, Classical, 6.O O O O (2 puzzles)
- Catalan: Open, Classical, 7.Qc2 (2 puzzles)
- Catalan: Open, Classical, 8.a4 (0 puzzles)
- Catalan: Open, Classical, 8.a4 Bd7 (0 puzzles)
- Catalan: Open, Classical, 8.a4 Bd7 9.Qxc4 (0 puzzles)
- Catalan: Open, Classical, 8.a4 Bd7 9.Qxc4 2 (0 puzzles)
- Catalan: Open, Classical, 8.Qxc4 (0 puzzles)
- Catalan: Open, Classical, 8.Qxc4 b5 9.Qc2 Bb7 (0 puzzles)
- Catalan: Open, Classical, 8.Qxc4, 10.Bf4 (0 puzzles)
- Catalan: Open, Classical, 8.Qxc4, 10.Bf4 Nc6 (0 puzzles)
E12
- Nimzo Indian Defense: Three Knights Variation, Duchamp Variation (15 puzzles)
- Queen's Indian Defense (19 puzzles)
- Queen's Indian Defense: Kasparov Petrosian Variation (1 puzzle)
- Queen's Indian Defense: Kasparov Petrosian Variation, Main Line (1 puzzle)
- Queen's Indian Defense: Kasparov Petrosian Variation, Modern Variation (0 puzzles)
- Queen's Indian Defense: Kasparov Petrosian Variation, Romanishin Attack (0 puzzles)
- Queen's Indian Defense: Kasparov Variation (13 puzzles)
- Queen's Indian Defense: Petrosian Variation (0 puzzles)
- Queen's Indian Defense: Petrosian Variation, Farago Defense (0 puzzles)
- Queen's Indian: Petrosian, 4...Ba6 (0 puzzles)
- Queen's Indian: Petrosian, 4...Ba6 5.Qc2 (0 puzzles)
- Queen's Indian: Petrosian, 4...Ba6 5.Qc2 Bb7 6.Nc3 c5 (0 puzzles)
- Queen's Indian: Petrosian, 4...Ba6 5.Qc2 Bb7 6.Nc3 c5 7.e4 (0 puzzles)
- Queen's Indian: Petrosian, 4...Bb7 (0 puzzles)
E15
- Queen's Indian Defense: Fianchetto Traditional (7 puzzles)
- Queen's Indian Defense: Fianchetto Variation (9 puzzles)
- Queen's Indian Defense: Fianchetto Variation, Check Variation (0 puzzles)
- Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line (0 puzzles)
- Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation (3 puzzles)
- Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Quiet Line (0 puzzles)
- Queen's Indian Defense: Fianchetto Variation, Sämisch Variation (1 puzzle)
- Queen's Indian: 4.g3 Bb7 (7 puzzles)
- Queen's Indian: Nimzowitsch, 5.b3 b5 (0 puzzles)
- Queen's Indian: Nimzowitsch, 5.b3 b5 6.cxb5 (0 puzzles)
- Queen's Indian: Nimzowitsch, 5.b3 Bb4+ 6.Bd2 Be7 7.Nc3 (0 puzzles)
- Queen's Indian: Nimzowitsch, 5.Qc2 (0 puzzles)
E35
- Nimzo Indian Defense: Classical Variation, Noa Variation (2 puzzles)
- Nimzo Indian: Classical, Noa, Exchange, 6.Bg5 (3 puzzles)
- Nimzo Indian: Classical, Noa, Exchange, 6.Bg5 h6 (2 puzzles)
- Nimzo Indian: Classical, Noa, Exchange, 6.Bg5 h6 7.Bh4 (2 puzzles)