Chess puzzle (Crushing)
Opening: Kings_Indian_Defense, Kings_Indian_Defense_Normal_Variation
Moves: 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. g3 Nc6 7. Bg2 a6 8. O-O
Rb8 9. a4 Bg4 10. a5 e5 11. d5 Nd4 12. Nxd4 *
Position (FEN): 1r1q1rk1/1pp2pbp/p2p1np1/P2Pp3/2PNP1b1/2N3P1/1P3PBP/R1BQ1RK1 b - - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1085
Best move: Bxd1