Chess puzzle (Checkmate)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Mengarinis_Opening
Moves: 1. e4 e5 2. a3 Nf6 3. d3 c5 4. Nc3 d6 5. h3 g6 6. Bg5 Bg7 7. Nd5 Be6 8. c4 O-O
9. Qf3 Nbd7 10. O-O-O h6 11. Bd2 Nxd5 12. exd5 Bf5 13. g4 e4 14. dxe4 Qb6 15.
gxf5 *
Position (FEN): r4rk1/pp1n1pb1/1q1p2pp/2pP1P2/2P1P3/P4Q1P/1P1B1P2/2KR1BNR b - - 0 15
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 689
Best move: Qxb2#