Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. e3 e5 5. h3 Bxf3 6. gxf3 Nf6 7. cxd5 Nxd5 8.
a3 Be7 9. Bb5 O-O 10. Bxc6 bxc6 11. e4 Nf4 12. Bxf4 exf4 13. e5 Bh4 14. Rg1 Rb8
15. Qd2 Qd5 16. Qxf4 Bxf2+ 17. Kxf2 Rxb2+ 18. Nd2 c5 19. Rxg7+ Kxg7 20. Rg1+
Kh8 *
Position (FEN): 5r1k/p1p2p1p/8/2pqP3/3P1Q2/P4P1P/1r1N1K2/6R1 w - - 2 21
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1095
Best move: Qf6#