Chess puzzle (Crushing)
Moves: 1. d4 d5 2. e4 dxe4 3. Nc3 Bf5 4. f3 Nf6 5. g4 Bg6 6. g5 Nd5 7. Nxe4 e6 8. Bb5+
c6 9. Ba4 Qa5+ 10. c3 Be7 11. Ne2 Bh5 12. N2g3 Bg6 13. h4 h6 14. Bd2 Qc7 15. c4
Nb6 16. Ba5 hxg5 17. c5 Bxe4 18. Nxe4 f5 19. Nf2 Qg3 20. Rh3 Qg1+ 21. Ke2 Qxd1+
22. Rxd1 Rxh4 23. Rxh4 gxh4 24. cxb6 axb6 25. Bxb6 Rxa4 26. a3 Kf7 27. f4 g6
28. Nd3 Kg7 29. Bc7 Na6 30. Be5+ Bf6 31. Kf3 Bxe5 32. Nxe5 Nc7 33. Ke3 Nd5+ 34.
Kf3 Ra8 35. Rh1 Rh8 36. Nc4 b5 37. Ne5 Ne7 38. Rc1 h3 39. Kg3 h2 40. Rh1 Kf6
41. Rxh2 Rxh2 42. Kxh2 g5 43. Kg3 g4 44. b3 Kg7 45. a4 Kf8 46. a5 Ke8 47. a6
Nc8 48. Nxc6 Kd7 49. a7 Nxa7 *
Position (FEN): 8/n2k4/2N1p3/1p3p2/3P1Pp1/1P4K1/8/8 w - - 0 50
White to move.
Themes: Hanging Piece Endgame, Knight Endgame  
Puzzle rating: 870
Best move: Nxa7