Chess puzzle (Crushing)
Moves: 1. d4 Nf6 2. c4 e5 3. d5 Bc5 4. e3 O-O 5. Nc3 a5 6. a3 Ba7 7. d6 c6 8. b4 Na6
9. Rb1 axb4 10. axb4 Nb8 11. Bd3 h6 12. Qc2 b6 13. Nge2 Bb7 14. f3 Na6 15. Ng3
Qb8 16. c5 bxc5 17. Bxa6 Bxa6 18. bxc5 Qe8 19. Nce2 e4 20. O-O *
Position (FEN): r3qrk1/b2p1pp1/b1pP1n1p/2P5/4p3/4PPN1/2Q1N1PP/1RB2RK1 b - - 1 20
Black to move.
Themes:  Middlegame  
Puzzle rating: 1849
Best move: Bd3