Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nbd2 d5 7. a4 a5 8. Re1
c6 9. c3 Bf5 10. Nh4 Bg4 11. Qb3 Qc8 12. e4 Be6 13. Qc2 Na6 14. Nhf3 c5 15. Ng5
cxd4 16. Nxe6 fxe6 17. exd5 exd5 18. Rxe7 dxc3 19. bxc3 Qc5 20. Ba3 Nb4 21.
Rxg7+ Kxg7 22. Qb3 Ng4 23. cxb4 Qxf2+ 24. Kh1 Qxd2 25. Bb2+ d4 26. bxa5 Rad8
27. h3 Nf2+ 28. Kh2 Nd3 29. Qxb7+ Rf7 30. Qb6 Qxb2 31. Rd1 Qxb6 32. axb6 Ne5
33. b7 d3 34. a5 d2 35. a6 Nc4 36. a7 Rxb7 37. Bxb7 Ne3 38. a8=Q Rxa8 39. Rxd2
Ra3 40. Rd7+ Kh6 41. h4 Ng4+ 42. Kh3 Kh5 43. Bd5 h6 44. Bf7 Ne5 45. Rd6 Rf3 46.
Rd5 Rxf7 *
Position (FEN): 8/5r2/6pp/3Rn2k/7P/6PK/8/8 w - - 0 47
White to move.
Themes: Pin Endgame Mate in 1 
Puzzle rating: 1814
Best move: g4#