Chess puzzle (Checkmate)
Moves: 1. c4 e5 2. Nc3 Nf6 3. d3 d5 4. cxd5 c6 5. dxc6 Bc5 6. cxb7 Bxb7 7. e4 Qd7 8.
Be2 Nc6 9. Nf3 Rd8 10. Bg5 Bxf2+ 11. Kxf2 Ng4+ 12. Ke1 f6 13. Bh4 Ne3 14. Qb3
Nxg2+ 15. Kd2 Nxh4 16. Nxh4 Nd4 17. Qb4 Nxe2 18. Nf5 Qxd3+ 19. Ke1 Qd2+ 20. Kf1
Nd4 *
Position (FEN): 3rk2r/pb4pp/5p2/4pN2/1Q1nP3/2N5/PP1q3P/R4K1R w k - 4 21
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 923
Best move: Qe7#