Chess puzzle (Checkmate)
Opening: Owen_Defense, Owen_Defense_Other_variations
Moves: 1. e4 b6 2. d4 Bb7 3. Bd3 g6 4. Nf3 d6 5. O-O e6 6. d5 Nd7 7. dxe6 fxe6 8. Nc3
Qe7 9. Bg5 Ngf6 10. Nd4 O-O-O 11. Bc4 h6 12. Bxf6 Nxf6 13. Nxe6 Re8 14. Qd3 Bg7
15. Nxg7 Qxg7 16. Ba6 Qd7 17. Rad1 g5 18. e5 Nh5 19. Qf3 Bxa6 *
Position (FEN): 2k1r2r/p1pq4/bp1p3p/4P1pn/8/2N2Q2/PPP2PPP/3R1RK1 w - - 0 20
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1190
Best move: Qa8#