Chess puzzle (Advantage)
Moves: 1. e4 e6 2. Nf3 d5 3. e5 c5 4. d4 Nc6 5. Bb5 Qb6 6. Bxc6+ bxc6 7. O-O c4 8. c3
Nh6 9. Nbd2 Nf5 10. Re1 Be7 11. Nf1 f6 12. Qc2 O-O 13. Ne3 Nxe3 14. Bxe3 Qc7
15. Re2 f5 16. Ng5 Bxg5 17. Bxg5 h6 18. Bd2 g5 19. h3 Qf7 20. Rae1 f4 21. f3
Qh7 22. Qa4 Bd7 23. Qa6 Rfb8 24. Qa3 Kf7 25. b3 cxb3 26. axb3 Qc2 27. Bxf4 Qxb3
28. Qd6 Rd8 29. Bd2 Qb6 30. Qa3 a5 31. f4 gxf4 32. Bxf4 Rf8 33. Bxh6 Rh8 34.
Rf2+ Kg6 35. Bd2 Raf8 36. Qe7 Rxf2 37. Qg5+ Kf7 38. Kxf2 Rf8 39. Kg1 Ke8 40.
Qg6+ Kd8 41. Qg7 Re8 42. Rf1 a4 43. Bg5+ Kc7 44. Qf7 a3 45. Kh2 *
Position (FEN): 4r3/2kb1Q2/1qp1p3/3pP1B1/3P4/p1P4P/6PK/5R2 b - - 1 45
Black to move.
Themes: Advanced Pawn Endgame  
Puzzle rating: 1426
Best move: a2