Chess puzzle (Equality)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8.
cxd4 Bb4+ 9. Bd2 Qa5 10. Bc4 Bxd2+ 11. Qxd2 Qxd2+ 12. Kxd2 O-O 13. Rab1 b6 14.
Rbc1 Ba6 15. Ke3 Rc8 16. Bxa6 Nxa6 17. a3 f6 18. h4 Kf7 19. g4 g6 20. g5 Rc7
21. Rxc7+ Nxc7 22. gxf6 Kxf6 23. Ne5 Rc8 24. Rd1 Nb5 25. Rd3 Rc3 26. a4 Rxd3+
27. Kxd3 Nd6 28. Nc6 Nc8 29. f4 h6 30. Kc3 g5 31. fxg5+ hxg5 32. hxg5+ Kxg5 33.
e5 Kf5 34. Kc4 Ke4 35. Nd8 Kf5 36. Kb5 Ke4 37. Nxe6 Kd5 38. Nc7+ Kxd4 39. e6
Ke5 40. Kc6 Ne7+ 41. Kd7 Ng8 42. Nb5 a6 43. Nc7 b5 44. axb5 *
Position (FEN): 6n1/2NK4/p3P3/1P2k3/8/8/8/8 b - - 0 44
Black to move.
Themes:  Endgame, Knight Endgame  
Puzzle rating: 1598
Best move: axb5