ECO code: D87
Gruenfeld: Classical Exchange, 9.O-O
This line of the Gruenfeld Defense arises after 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O. White completes development by castling, reinforcing central control and preparing for potential central and kingside activity.
Characteristic of 9.O-O: This move is a natural developing and safety move for White, signaling readiness to launch a central or kingside initiative. By castling, White safeguards the king and connects the rooks, often a prelude to central pawn breaks or piece maneuvers.
Attacking or Defensive: For White, this position is generally attacking, focusing on controlling and expanding in the center. Black adopts a more dynamic, counterattacking approach, challenging White’s center with moves like ...c5.
Center Control: This opening strongly emphasizes control of the center. White’s pawns on d4 and e4 establish a large central presence, while Black counters actively with piece pressure and pawn breaks to undermine that center.
This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.
Practice puzzles and train your tactics with real positions from games that used the Gruenfeld: Classical Exchange, 9.O-O, and sharpen your opening mastery.
Puzzle 1 of 1 - Move #33 white