Chess puzzle (Crushing)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 c5 6. Qa4 a6 7. Nc3 Ne7 8.
Bd3 Nc6 9. O-O Be7 10. Be3 b6 11. Nd5 O-O 12. Nxe7+ Qxe7 13. c3 Bb7 14. Qb3 b5
15. Qd1 Rad8 16. Re1 Rfe8 17. f3 d6 18. Qe2 h6 19. Qf2 Ne5 20. Bc2 Nc4 21. b3
Nxe3 22. Qxe3 d5 23. Rad1 dxe4 24. Rxd8 Rxd8 25. Bxe4 Bxe4 26. Qxe4 Qxe4 27.
Rxe4 Rd1+ 28. Kf2 Rd2+ 29. Re2 Rxe2+ 30. Kxe2 f5 31. Ke3 Kf7 32. g4 fxg4 33.
fxg4 Kf6 34. Kf4 a5 35. h4 g5+ 36. hxg5+ hxg5+ 37. Ke4 Ke6 38. a4 c4 39. bxc4 *
Position (FEN): 8/8/4k3/pp4p1/P1P1K1P1/2P5/8/8 b - - 0 39
Black to move.
Themes:  Endgame, Pawn Endgame  
Puzzle rating: 1620
Best move: bxa4