Chess puzzle (Equality)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bc5 5. h3 O-O 6. O-O Re8 7. a3 d5 8. exd5
Nxd5 9. d3 a6 10. Bxc6 bxc6 11. Re1 Qf6 12. Ne4 Qe7 13. Bg5 f6 14. Nxc5 fxg5
15. d4 g4 16. Rxe5 Qf8 17. hxg4 Bxg4 18. Qd3 Bxf3 19. Qxf3 Qxf3 20. gxf3 Rf8
21. Kg2 Rf4 22. c3 Raf8 23. Ne6 Rxf3 24. Nxf8 Rxf8 25. Rae1 Nf4+ 26. Kf1 Nd3
27. Re8 Nxe1 28. Rxf8+ Kxf8 29. Kxe1 h5 30. f4 Kf7 31. Kf2 Kf6 32. Kf3 Kf5 33.
b3 h4 34. c4 h3 35. b4 h2 36. Kg2 Kxf4 *
Position (FEN): 8/2p3p1/p1p5/8/1PPP1k2/P7/6Kp/8 w - - 0 37
White to move.
Themes: Defensive Move Endgame, Pawn Endgame  
Puzzle rating: 2167
Best move: a4