Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6 7. d5 exd5 8.
Qxd5 Be6 9. Qxe4 Nf6 10. Qh4 Qd4 11. Qg3 Ne4 12. Nxe4 Qxe4+ 13. Be3 Qxc2 14.
Qxg7 O-O-O 15. Qc3 Qg6 16. Rc1 Rhe8 17. Bb5 Qxg2 18. Bxc6 bxc6 19. Rf1 Bc4 20.
Qxc4 Rxe3+ 21. fxe3 *
Position (FEN): 2kr4/p1p2p1p/2p5/8/2Q5/P3P3/1P4qP/2R1KR2 b - - 0 21
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 863
Best move: Qd2#