Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 e6 3. Nf3 Nf6 4. e3 c5 5. c4 cxd4 6. Nxd4 Bb4+ 7. Nc3 Nc6 8.
Qa4 O-O 9. Nxc6 Bxc3+ 10. bxc3 bxc6 11. Qxc6 Qa5 12. cxd5 Nxd5 13. Be5 Nxe3 14.
fxe3 Qxe5 15. Qxa8 Qxe3+ 16. Be2 Qxc3+ 17. Kf2 Qd4+ 18. Kg3 Qe5+ 19. Kf2 Qd4+
20. Kg3 g5 21. Qf3 *
Position (FEN): 2b2rk1/p4p1p/4p3/6p1/3q4/5QK1/P3B1PP/R6R b - - 1 21
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1051
Best move: Qh4#