Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. e3 Bb7 5. Be2 Ne4 6. Nbd2 f5 7. c3 d6 8. Qc2
Nd7 9. h4 Be7 10. h5 Bf6 11. Bd3 Nxd2 12. Qxd2 O-O 13. O-O-O Qe7 14. Be2 Rad8
15. Rdg1 e5 16. Bh2 a5 17. g4 fxg4 18. Rxg4 exd4 19. cxd4 Bxd4 20. Qxd4 Bxf3
21. Bxf3 Rxf3 22. Rhg1 Rf7 23. Bf4 Nf8 24. Bh6 Ne6 25. Bxg7 Nxd4 26. Bxd4+ Kf8
*
Position (FEN): 3r1k2/2p1qr1p/1p1p4/p6P/3B2R1/4P3/PP3P2/2K3R1 w - - 1 27
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 523
Best move: Rg8#