Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 h6 5. d3 Be7 6. Ne2 O-O 7. Ng3 Be6 8. Bb3
Bxb3 9. axb3 c5 10. Bd2 Nh7 11. O-O Nc6 12. c3 b5 13. Re1 Ng5 14. Be3 Nxf3+ 15.
Qxf3 Bg5 16. Nf5 Bxe3 17. Rxe3 Qg5 18. Qg3 Qxg3 19. Rxg3 g6 20. Nxh6+ Kg7 21.
Ng4 Rh8 22. Rf3 b4 23. Nf6 Rh4 24. Nd5 Rah8 25. h3 g5 26. Nf6 a5 27. Kf1 R8h6
28. Ng4 Rxg4 29. Re1 Rf4 30. Rg3 Kg6 31. Rge3 Rf6 32. Rg3 Rh4 33. Kg1 Re6 34.
Ra1 f5 35. exf5+ Kxf5 36. Re1 Kg6 37. Ree3 Rf6 38. Re2 Rhf4 39. Rd2 Kh5 40. Re2
Kh4 41. Ree3 Rxf2 42. Re4+ Kxg3 *
Position (FEN): 8/8/2np1r2/p1p1p1p1/1p2R3/1PPP2kP/1P3rP1/6K1 w - - 0 43
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 977
Best move: Rg4#