Chess puzzle (Crushing)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Chigorin_Variation
Moves: 1. d4 d5 2. Nf3 Nc6 3. b3 Bg4 4. e3 Nf6 5. Bb2 e6 6. a3 Bd6 7. c4 dxc4 8. Bxc4
Ne4 9. O-O Qf6 10. Be2 Qh6 11. d5 *
Position (FEN): r3k2r/ppp2ppp/2nbp2q/3P4/4n1b1/PP2PN2/1B2BPPP/RN1Q1RK1 b kq - 0 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 1605
Best move: Bxf3