Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nc6 5. h3 Bf5 6. c3 e6 7. Bb5 Qb6 8. Ba4
Nf6 9. O-O Bd6 10. Qb3 Qc7 11. Bg5 Ne4 12. Nbd2 h6 13. Nxe4 dxe4 14. Nh4 hxg5
15. Nxf5 exf5 16. Qd5 O-O 17. Qxf5 Rae8 18. Bc2 Qe7 19. Rfe1 g6 20. Qb5 f5 21.
a3 a6 22. Qe2 Bc7 23. b4 Qd6 24. g3 Kg7 25. b5 axb5 26. Qxb5 Re7 27. Qxb7 e3
28. Re2 exf2+ 29. Rxf2 Qxg3+ 30. Rg2 Re1+ 31. Rxe1 *
Position (FEN): 5r2/1Qb3k1/2n3p1/5pp1/3P4/P1P3qP/2B3R1/4R1K1 b - - 0 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 909
Best move: Qxe1#