Chess puzzle (Advantage)
Moves: 1. b3 e5 2. Bb2 Nc6 3. Nf3 d6 4. h3 Nf6 5. d3 Be7 6. c3 O-O 7. Qc2 d5 8. e3 Re8
9. Nbd2 d4 10. O-O-O dxc3 11. Bxc3 Ba3+ 12. Kb1 Bf5 13. Nc4 Bb4 14. Bxe5 Nxe5
15. Ncxe5 c5 16. g4 Be6 17. Ng5 Nd5 18. Ne4 Qb6 19. Nc4 Qc6 20. a3 Nc3+ 21.
Nxc3 Bxc3 22. Rg1 Bf6 23. Bg2 Qc7 24. Rc1 Rab8 25. d4 b5 26. Nd2 c4 27. Ne4 Qa5
28. Nxf6+ gxf6 29. d5 Bd7 30. Ka2 Rec8 31. b4 Qb6 32. g5 f5 33. e4 a5 34. Rb1
axb4 35. Rxb4 Ra8 36. h4 Qc5 37. Qb2 c3 38. Qb3 c2 39. Rc1 Qxf2 40. Bf1 Rab8
41. Bd3 fxe4 42. Bxe4 Bf5 43. Bxf5 Qxf5 44. Rxb5 Rxb5 45. Qxb5 Qd3 46. Qb3 Qd1
47. Qb2 Qxd5+ 48. Ka1 Qf5 49. Qd4 *
Position (FEN): 2r3k1/5p1p/8/5qP1/3Q3P/P7/2p5/K1R5 b - - 3 49
Black to move.
Themes: Defensive Move Endgame  
Puzzle rating: 1778
Best move: Rb8