Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Other_variations
Moves: 1. e4 Nc6 2. Bc4 e6 3. Nc3 Nf6 4. Nf3 d5 5. exd5 exd5 6. Bb3 Qe7+ 7. Qe2 Qxe2+
8. Nxe2 Bg4 9. Nf4 Bxf3 10. gxf3 O-O-O 11. c3 g5 12. Ng2 Ne5 13. f4 Nf3+ 14.
Ke2 Re8+ 15. Kxf3 g4+ 16. Kg3 Ne4+ 17. Kh4 h5 18. Bxd5 *
Position (FEN): 2k1rb1r/ppp2p2/8/3B3p/4nPpK/2P5/PP1P1PNP/R1B4R b - - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1069
Best move: Be7#