Chess puzzle (Checkmate)
Moves: 1. Nf3 c5 2. e3 d6 3. b3 Nc6 4. Bb2 Nf6 5. Bb5 Bd7 6. O-O g6 7. d4 cxd4 8. Nxd4
Bg7 9. c4 O-O 10. Nc3 Nxd4 11. Qxd4 a6 12. Bxd7 Qxd7 13. Nd5 Nh5 14. Qd2 e5 15.
Nb6 Qd8 16. Nxa8 Qxa8 17. Rad1 b6 18. Qxd6 f5 19. Bxe5 f4 20. Bxg7 Kxg7 21.
Qe5+ Kh6 22. exf4 Nxf4 23. g3 *
Position (FEN): q4r2/7p/pp4pk/4Q3/2P2n2/1P4P1/P4P1P/3R1RK1 b - - 0 23
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1201
Best move: Nh3#