Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Scandinavian_Variation
Moves: 1. e4 d5 2. exd5 Qxd5 3. d4 Nc6 4. Nf3 Bg4 5. Nc3 Qd8 6. Be3 g6 7. Bd3 Bg7 8.
Qd2 Bxf3 9. gxf3 Bxd4 10. Bxd4 Qxd4 11. O-O-O Qg7 12. Nb5 O-O-O 13. Nxa7+ Nxa7
14. Bf5+ gxf5 *
Position (FEN): 2kr2nr/npp1ppqp/8/5p2/8/5P2/PPPQ1P1P/2KR3R w - - 0 15
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 436
Best move: Qxd8#