Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. Be3 e6 7. Qd2 Be7 8. f3
O-O 9. O-O-O a6 10. g4 Nxd4 11. Bxd4 b5 12. h4 e5 13. Be3 b4 14. Na4 Bd7 15.
Nb6 Rb8 16. Nxd7 Nxd7 17. Bxa6 Qa5 18. Bc4 Rfc8 19. Bd5 Nc5 20. Bxc5 dxc5 21.
Bc4 Rd8 22. Qe3 Rd4 23. Qb3 Rbd8 24. Bxf7+ Kh8 25. Bd5 Qa6 26. g5 Qe2 27. Rxd4
cxd4 28. Qd3 Qg2 29. Qf1 Qg3 30. Qh3 Qf4+ 31. Kb1 Qd2 32. Qe6 d3 33. cxd3 Qxd3+
34. Ka1 Qxf3 35. Rc1 Qf4 36. Rb1 Bd6 37. Rd1 Bc7 38. Qe7 Qf3 39. Rb1 Bb6 40.
Qxe5 Qd3 41. h5 Bd4 42. Qe7 Rc8 43. h6 Bxb2+ 44. Rxb2 Rc1+ 45. Rb1 *
Position (FEN): 7k/4Q1pp/7P/3B2P1/1p2P3/3q4/P7/KRr5 b - - 2 45
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 684
Best move: Qxb1#