Chess puzzle (Equality)
Moves: 1. c4 e5 2. g3 Bc5 3. Bg2 d6 4. Nc3 a6 5. Nf3 Ne7 6. d4 exd4 7. Nxd4 O-O 8. O-O
Nbc6 9. Be3 Nxd4 10. Bxd4 Bxd4 11. Qxd4 Ng6 12. e4 f5 13. exf5 Rxf5 14. Nd5 c6
15. Ne3 Rf7 16. Rad1 Rf6 17. Be4 Qe7 18. c5 d5 19. Bg2 Ne5 20. f4 Ng4 21. Nxg4
Bxg4 22. Rde1 Qf7 23. Re5 h6 24. Rfe1 Re6 25. Qe3 Rae8 26. Qc3 Rxe5 27. Rxe5
Rxe5 28. Qxe5 Kh7 29. h3 Bf5 30. g4 Bb1 31. a3 Kg6 32. Qh5+ Kf6 33. g5+ hxg5
34. fxg5+ Ke7 35. Qe2+ Qe6 36. Kf2 d4 37. Qxe6+ Kxe6 38. Ke2 Ke5 39. Kd2 Be4
40. Bf1 a5 41. b4 *
Position (FEN): 8/1p4p1/2p5/p1P1k1P1/1P1pb3/P6P/3K4/5B2 b - - 0 41
Black to move.
Themes:  Bishop Endgame, Endgame  
Puzzle rating: 1323
Best move: axb4