Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bd3 Nxe4 7. Bxe4 Nf6
8. Qd3 Bg4 9. O-O Nxe4 10. Qxe4 Bxf3 11. Qxf3 Qxd4 12. Be3 Qf6 13. Qg3 e6 14.
c3 Be7 15. Bd4 Qf5 16. Qxg7 O-O-O 17. Rad1 Rhg8 18. Qe5 Rxg2+ 19. Kxg2 Rg8+ 20.
Kh1 *
Position (FEN): 2k3r1/pp2bp1p/2p1p3/4Qq2/3B4/2P5/PP3P1P/3R1R1K b - - 2 20
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 990
Best move: Qf3#