Chess puzzle (Advantage)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 c6 5. Nf3 d5 6. e3 h6 7. Bh4 Nbd7 8. Bd3
Nb6 9. cxd5 Nbxd5 10. Rc1 Qa5 11. Qc2 Qxa2 12. O-O Nxc3 13. bxc3 Qxc2 14. Rxc2
Be7 15. Nd2 b5 16. f4 Ng4 17. Bf2 a5 18. h3 Nxf2 19. Rxf2 a4 20. f5 exf5 21.
Bxf5 Bxf5 22. Rxf5 O-O 23. d5 c5 24. Ne4 g6 25. Re5 Ra7 26. d6 Bg5 27. Nxg5
hxg5 28. Rxc5 Rb7 29. Rxg5 Rd8 30. Rd2 Rb6 31. d7 Rb7 32. Rdd5 a3 33. Rxb5 *
Position (FEN): 3r2k1/1r1P1p2/6p1/1R4R1/8/p1P1P2P/6P1/6K1 b - - 0 33
Black to move.
Themes: Advanced Pawn Endgame, Rook Endgame  
Puzzle rating: 1514
Best move: a2