Chess puzzle (Checkmate)
Opening: Kings_Indian_Attack, Kings_Indian_Attack_Omega-Delta_Gambit
Moves: 1. Nf3 d5 2. g3 e5 3. Bg2 Bd6 4. d3 Nc6 5. O-O Be6 6. c4 d4 7. a3 Qd7 8. b4 f6
9. Re1 O-O-O 10. b5 Nb8 11. a4 Bb4 12. Bd2 Bxd2 13. Qxd2 Bh3 14. Bh1 h5 15. a5
g5 16. a6 b6 17. Nxe5 fxe5 *
Position (FEN): 1nkr2nr/p1pq4/Pp6/1P2p1pp/2Pp4/3P2Pb/3QPP1P/RN2R1KB w - - 0 18
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1271
Best move: Bb7#