Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. e3 a6 4. Nf3 c5 5. Nbd2 Nc6 6. dxc5 Bxc5 7. a3 Nf6 8. Be2
O-O 9. O-O Qc7 10. b4 Be7 11. Bb2 b6 12. Rc1 Bb7 13. b5 axb5 14. cxb5 Bxa3 15.
Bxa3 Rxa3 16. bxc6 Ba6 17. Bxa6 Rxa6 18. Qe2 Rfa8 19. Rc2 Ra1 20. Rxa1 Rxa1+
21. Nf1 Ne4 22. g3 Nd6 23. Ne5 b5 24. Nd3 Nc4 25. Nb4 Qd6 26. Ra2 Rxa2 27. Nxa2
Qxc6 28. Nd2 Qc5 29. Nb3 Qa3 30. Nd4 b4 31. Qc2 g6 32. e4 e5 33. Nb5 Qa5 34.
Nc7 Qxc7 35. exd5 Qc5 36. Qb3 Qxd5 37. Qxb4 Qd1+ 38. Kg2 Nd2 39. Qb8+ Kg7 40.
Qxe5+ Kf8 41. Qd6+ Kg8 42. Qd8+ Kg7 43. Qd4+ Kh6 44. Qf4+ Kg7 45. Nc3 *
Position (FEN): 8/5pkp/6p1/8/5Q2/2N3P1/3n1PKP/3q4 b - - 10 45
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 863
Best move: Qf1#