Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 7. Be2 e6 8.
O-O Nf6 9. Nc3 Qd7 10. Be3 Bd6 11. h3 Bh5 12. Rc1 O-O 13. Qa4 a6 14. a3 Rac8
15. Rfd1 Nd5 16. Rd2 Nf4 17. Qd1 Ne7 18. Bf1 Ned5 19. g4 Bg6 20. Ne5 Qe8 21.
Nxd5 Nxd5 22. Bg2 Rxc1 23. Qxc1 Nxe3 24. fxe3 Bxe5 25. dxe5 b5 26. Rd6 a5 27.
Qd2 a4 28. Bc6 Qc8 29. Bxb5 Qb8 30. Bxa4 Rc8 31. b4 h6 32. b5 Qa8 33. Ra6 Qf3
34. Rc6 Rxc6 35. bxc6 Be4 36. c7 Qh1+ 37. Kf2 Qg2+ 38. Ke1 Qg1+ 39. Ke2 Qg2+
40. Kd1 Qf1+ 41. Qe1 Qd3+ 42. Kc1 Qc4+ 43. Kb2 Qxc7 44. Qc3 Qb6+ 45. Ka2 *
Position (FEN): 6k1/5pp1/1q2p2p/4P3/B3b1P1/P1Q1P2P/K7/8 b - - 3 45
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 816
Best move: Qb1#