Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bf4 d6 5. e3 O-O 6. Bd3 c5 7. Nf3 cxd4 8. exd4
Bg4 9. O-O Nh5 10. Be3 Nc6 11. Be2 Bxf3 12. Bxf3 Nf6 13. Qd2 a6 14. a3 Rb8 15.
b4 Qc7 16. b5 axb5 17. Nxb5 Qa5 18. Qc2 Nd7 19. Rfd1 Rfc8 20. a4 Na7 21. Rdc1
Nb6 22. Be2 Nc6 23. Qd1 Nd7 24. Ra2 Nf8 25. d5 Nd8 26. c5 dxc5 27. Bxc5 Bf6 28.
Bg4 Rxc5 29. Rxc5 Nd7 30. Bxd7 Qb4 31. Qc2 *
Position (FEN): 1r1n2k1/1p1Bpp1p/5bp1/1NRP4/Pq6/8/R1Q2PPP/6K1 b - - 2 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 613
Best move: Qe1#