Chess puzzle (Crushing)
Opening: Nimzo-Larsen_Attack, Nimzo-Larsen_Attack_Indian_Variation
Moves: 1. b3 Nf6 2. c4 g6 3. g3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. Nf3 e5 7. d3 Nc6 8. O-O h6
9. a3 a5 10. Nbd2 Bf5 11. Qc2 g5 12. d4 *
Position (FEN): r2q1rk1/1pp2pb1/2np1n1p/p3pbp1/2PP4/PP3NP1/1BQNPPBP/R4RK1 b - - 0 12
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1121
Best move: Bxc2