Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e5 3. cxd5 Qxd5 4. e3 exd4 5. exd4 Nc6 6. Nf3 Bb4+ 7. Nc3 Nge7
8. Bd2 Bxc3 9. bxc3 O-O 10. Bd3 Bg4 11. c4 Qe6+ 12. Be3 Bxf3 13. Qxf3 Nxd4 14.
Qxb7 Nec6 15. Qxc7 Rad8 16. O-O Nf3+ 17. Kh1 Rxd3 18. gxf3 Ne5 19. Qb7 Nxc4 20.
Rg1 Nxe3 21. fxe3 Qxe3 22. Qb2 Qxf3+ 23. Rg2 Rd1+ 24. Rxd1 Qxd1+ 25. Rg1 Qf3+
26. Rg2 Re8 *
Position (FEN): 4r1k1/p4ppp/8/8/8/5q2/PQ4RP/7K w - - 4 27
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 517
Best move: Qxg7#