Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 dxc4 3. e4 Nc6 4. Nf3 Bg4 5. Bxc4 e6 6. d5 exd5 7. Bxd5 Bxf3 8.
Qxf3 Ne5 9. Qg3 Bb4+ 10. Nc3 Bxc3+ 11. bxc3 Qf6 12. Bg5 Qd6 13. O-O f6 14. Bf4
g5 15. Bxe5 Qxe5 16. Bxb7 Rb8 17. Bc6+ Kf8 18. Qh3 Ne7 19. Qh6+ Kf7 20. Ba4 c5
21. Bb3+ Ke8 22. Qg7 Rg8 23. Bf7+ Kd7 24. Rad1+ Kc7 25. Bxg8 Rxg8 26. Qxh7 Re8
27. Rd3 Rd8 28. Rxd8 Kxd8 29. Rd1+ Kc7 30. Qh8 Nc6 31. Qg7+ Kb6 32. Rb1+ Ka5
33. Qd7 Qxe4 34. Qc7+ Ka4 35. Rc1 c4 36. Qb7 a5 37. Rb1 Qd5 38. Qb2 Qc5 39. g3
Ne5 40. Qc2+ Ka3 41. Rb3+ cxb3 *
Position (FEN): 8/8/5p2/p1q1n1p1/8/kpP3P1/P1Q2P1P/6K1 w - - 0 42
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 800
Best move: Qxb3#