Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nf6 7. f3 Bb4 8. Ne2
Nc6 9. Qd2 d5 10. exd5 Nxd5 11. a3 Bxc3 12. Nxc3 Nxe3 13. Qxe3 Qe5 14. Qxe5
Nxe5 15. O-O-O Ke7 16. Be2 Bd7 17. Rhe1 Nc6 18. Bc4 Rac8 19. Nd5+ Kd8 20. Nb6
Rc7 21. Rd6 Ke7 22. Red1 Rd8 23. Bb3 Be8 24. R6d2 Rxd2 25. Rxd2 Na5 26. Kb1 Bb5
27. f4 Rc6 28. Na4 Nxb3 29. cxb3 Bxa4 30. bxa4 Rc4 31. Rc2 Rxf4 32. Rc7+ Kf6
33. Rxb7 Rxa4 34. Ka2 g5 *
Position (FEN): 8/1R3p1p/p3pk2/6p1/r7/P7/KP4PP/8 w - - 0 35
White to move.
Themes: Defensive Move Endgame, Rook Endgame  
Puzzle rating: 1928
Best move: b4