Chess puzzle (Advantage)
Opening: Center_Game, Center_Game_Other_variations
Moves: 1. e4 e5 2. d4 f6 3. dxe5 fxe5 4. Nf3 Nc6 5. Nc3 Bc5 6. Bc4 Nf6 7. O-O d6 8.
Nd5 Nxd5 9. Bxd5 Bg4 10. a3 Nd4 11. Bxb7 *
Position (FEN): r2qk2r/pBp3pp/3p4/2b1p3/3nP1b1/P4N2/1PP2PPP/R1BQ1RK1 b kq - 0 11
Black to move.
Themes: Defensive Move Middlegame  Castling
Puzzle rating: 2271
Best move: O-O