Chess puzzle (Checkmate)
Moves: 1. e3 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Nf6 5. Qb3 Bd7 6. Qxb7 Bc6 7. Qb3 Nbd7 8.
Bb5 Rb8 9. a4 a6 10. Qa2 axb5 11. axb5 Bxb5 12. Nxb5 Rxb5 13. Qa8 Qxa8 14.
Rxa8+ Rb8 15. Ra7 Bd6 16. Nf3 O-O 17. O-O Ra8 18. Rb7 Ra1 19. Rb3 Rfa8 20. Nd4
c5 21. Nb5 Be5 22. f4 Bb8 23. Na3 c4 24. Rb4 Bd6 25. Rb7 Bxa3 26. bxa3 Rb8 27.
Ra7 Rbb1 28. Ra8+ Nf8 29. a4 Ne4 30. a5 Nxd2 31. Rd1 Rxc1 32. Rxc1 Rxc1+ 33.
Kf2 Ne4+ 34. Kf3 c3 35. a6 c2 36. a7 Rf1+ 37. Kg4 Nf6+ 38. Kf5 c1=Q 39. Rxf8+
Kxf8 40. a8=Q+ Ne8 41. Qxd5 Qxe3 42. Qc4 g6+ 43. Kg5 f6+ 44. Kg4 f5+ 45. Kg5
h6+ 46. Kxg6 Qxf4 *
Position (FEN): 4nk2/8/6Kp/5p2/2Q2q2/8/6PP/5r2 w - - 0 47
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 858
Best move: Qf7#