Chess puzzle (Equality)
Moves: 1. e4 e6 2. Nf3 b6 3. d4 Bb7 4. Bd3 Nf6 5. Bg5 Be7 6. Bxf6 Bxf6 7. Nc3 Nc6 8.
d5 exd5 9. exd5 Bxc3+ 10. bxc3 Qe7+ 11. Qe2 Qxe2+ 12. Bxe2 Ne7 13. c4 O-O-O 14.
O-O Nf5 15. Bd3 Nd6 16. Ng5 h6 17. Ne4 Nxe4 18. Bxe4 Rhe8 19. f3 Ba6 20. Bd3 g6
21. Rfe1 Rf8 22. Re7 d6 23. Rae1 Rd7 24. Rxd7 Kxd7 25. Re4 f5 26. Re6 Rg8 27.
Rxg6 Rxg6 28. Bxf5+ Ke7 29. Bxg6 Bxc4 30. Be4 Bxa2 31. g4 Kf6 32. Kg2 Kg5 33.
Kg3 h5 34. h4+ Kh6 35. g5+ Kg7 36. Kf4 Kf7 37. Kf5 Kg7 38. Ke6 Bc4 39. Kd7 a5
40. Kxc7 *
Position (FEN): 8/2K3k1/1p1p4/p2P2Pp/2b1B2P/5P2/2P5/8 b - - 0 40
Black to move.
Themes: Defensive Move Bishop Endgame, Endgame  
Puzzle rating: 1816
Best move: a4