Chess puzzle (Crushing)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8.
Ne2 c5 9. Be3 Qa5 10. O-O Nc6 11. Qb3 cxd4 12. cxd4 e5 13. d5 Nd4 14. Bxd4 exd4
15. Rad1 Qc5 16. Bd3 f5 17. f3 fxe4 18. fxe4 Bg4 19. Rxf8+ Rxf8 20. Qc4 Qxc4
21. Bxc4 Rc8 22. Bd3 Bxe2 23. Bxe2 Be5 24. Bd3 Rc3 25. Kf2 Kf7 26. g3 a6 27.
Ke2 b5 28. Rd2 Kf6 29. Rc2 Kg5 30. Rxc3 dxc3 31. Kf3 b4 32. Bc2 h5 33. h3 Kf6
34. Bb3 Ke7 35. g4 Kd6 36. gxh5 gxh5 37. Ke3 Kc5 38. Kd3 a5 39. Ba4 h4 40. Bb3
Kb5 41. Bc2 *
Position (FEN): 8/8/8/pk1Pb3/1p2P2p/2pK3P/P1B5/8 b - - 3 41
Black to move.
Themes: Defensive Move, Zugzwang Bishop Endgame, Endgame  
Puzzle rating: 1629
Best move: a4