Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O c5 5. b3 Nc6 6. Bb2 Be7 7. e3 O-O 8. d4 b6
9. dxc5 bxc5 10. Nbd2 Rb8 11. c4 Ba6 12. Qc2 Nb4 13. Qc3 dxc4 14. Nxc4 Qd3 15.
Nfe5 Qxc3 16. Bxc3 Nfd5 17. Bb2 Bf6 18. a3 Bxe5 19. Bxe5 Nc2 20. Rac1 Nxa3 21.
Bxb8 Rxb8 22. Nxa3 Bxf1 23. Bxf1 Rxb3 24. Rxc5 g6 25. Ra5 Nc3 26. Rxa7 Rb2 27.
Nc4 Rb1 28. Nd2 Rd1 29. Rd7 Kg7 30. Rd3 Ne2+ 31. Kg2 Nc1 32. Rd4 e5 33. Rd6 Nb3
34. Ne4 Rb1 35. Bc4 f5 36. Ng5 Kh6 37. h4 Na5 38. Rd7 Kh5 39. f3 Rb2+ 40. Kh3
h6 41. Rh7 Nxc4 42. g4+ fxg4+ *
Position (FEN): 8/7R/6pp/4p1Nk/2n3pP/4PP1K/1r6/8 w - - 0 43
White to move.
Themes: Pin Endgame Mate in 1 
Puzzle rating: 983
Best move: fxg4#