Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. b3 c5 3. Bb2 Nc6 4. e3 e5 5. Bb5 Bd6 6. Nc3 a6 7. Bxc6+ bxc6 8.
O-O Nf6 9. Ne2 Qe7 10. Ng3 O-O 11. h3 e4 12. Nh2 Be6 13. f4 exf3 14. Rxf3 Qc7
15. Qe1 h5 16. Bxf6 gxf6 17. Ngf1 Kg7 18. Qh4 Rg8 19. Qxf6+ Kf8 20. Kh1 Ke8 21.
c3 Kd7 22. d4 Rg6 23. Qh4 cxd4 24. cxd4 Rag8 25. Rf2 Be7 26. Qxh5 Rg5 27. Qe2
Bxh3 28. gxh3 *
Position (FEN): 6r1/2qkbp2/p1p5/3p2r1/3P4/1P2P2P/P3QR1N/R4N1K b - - 0 28
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 838
Best move: Rg1#