Chess puzzle (Advantage)
Moves: 1. g3 e5 2. c4 f6 3. Bg2 Nc6 4. d3 a6 5. Nf3 a5 6. a4 Bc5 7. O-O h5 8. h4 d6 9.
Nc3 Bg4 10. Nd5 Nge7 11. Nxe7 Nxe7 12. Qb3 Nc6 13. Qxb7 Rb8 14. Qxc6+ Qd7 15.
Qxd7+ Kxd7 16. Re1 g5 17. Nh2 gxh4 18. Nxg4 hxg4 19. gxh4 Rxh4 20. e3 Bb4 21.
Re2 f5 22. Bd2 Bxd2 23. Rxd2 f4 24. exf4 exf4 25. f3 g3 26. Re1 Rb4 27. Rde2
Rxa4 28. Re7+ Kc6 29. Rf7 Rb4 30. Ree7 Kc5 31. Rxc7+ Kd4 32. Rb7 Rxb7 33. Rxb7
Kxd3 34. Bf1+ Kc2 35. Rb5 a4 36. Ra5 Rh2 37. Bg2 Kb3 38. c5 dxc5 39. Rxc5 Kxb2
40. Rb5+ Kc3 41. Bf1 *
Position (FEN): 8/8/8/1R6/p4p2/2k2Pp1/7r/5BK1 b - - 3 41
Black to move.
Themes:  Endgame  
Puzzle rating: 1604
Best move: a3