Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 O-O 6. Nge2 c5 7. d5 Bg4 8. f3
Bd7 9. Bg5 h6 10. Be3 a6 11. Qd2 Kh7 12. h4 b5 13. cxb5 axb5 14. Bxb5 Bxb5 15.
Nxb5 Qb6 16. Nbc3 Nbd7 17. h5 g5 18. f4 Ng4 19. fxg5 Nxe3 20. Qxe3 Qxb2 21. Rb1
Bxc3+ 22. Nxc3 Qxg2 23. Rg1 Qh2 24. gxh6 Rg8 25. Rg7+ Rxg7 26. hxg7 Kxg7 27.
Qg5+ Kf8 28. Rb7 Ke8 29. h6 Nf6 30. Qg7 Qh4+ 31. Kd2 Qf2+ 32. Kc1 Qe3+ 33. Kb2
Qf2+ 34. Kb3 c4+ 35. Kxc4 Rc8+ 36. Kb3 Rxc3+ 37. Kxc3 Nxe4+ 38. Kd3 Nc5+ 39.
Kc4 Qxa2+ 40. Kb5 Qb3+ 41. Ka5 Qa4+ 42. Kb6 Qa6+ 43. Kc7 *
Position (FEN): 4k3/1RK1ppQ1/q2p3P/2nP4/8/8/8/8 b - - 7 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1066
Best move: Qxb7#