Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. c3 Nc6 5. Nd2 d5 6. Ngf3 Be7 7. Bd3 Nh5 8. Bg3
Nxg3 9. hxg3 h6 10. Qe2 Bd7 11. O-O O-O 12. dxc5 Bxc5 13. e4 d4 14. Nb3 Qb6 15.
cxd4 Nxd4 16. Nfxd4 Bxd4 17. e5 Bc6 18. Rac1 Rfd8 19. Rfd1 Kh8 20. Nxd4 Rxd4
21. b3 Rad8 22. Bc2 Qa5 23. Rxd4 Rxd4 24. Rd1 Qd5 25. Rxd4 *
Position (FEN): 7k/pp3pp1/2b1p2p/3qP3/3R4/1P4P1/P1B1QPP1/6K1 b - - 0 25
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 821
Best move: Qxg2#