Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. Nb5 Nb6 8.
c3 a6 9. Na3 c5 10. Nc2 Nc6 11. Nf3 O-O 12. Bd3 f5 13. exf6 Qxf6 14. O-O cxd4
15. Ncxd4 e5 16. Nxc6 bxc6 17. Bc2 e4 18. Nd4 Bd7 19. Nb3 Qg6 20. Kh1 Rf4 21.
f3 Nc4 22. fxe4 Ne3 23. Rxf4 *
Position (FEN): r5k1/3b2pp/p1p3q1/3p4/4PR2/1NP1n3/PPB3PP/R2Q3K b - - 0 23
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 1036
Best move: Qxg2#