Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Mason_Variation
Moves: 1. d4 d5 2. Bf4 f6 3. Nc3 c6 4. e4 e6 5. exd5 exd5 6. Nf3 Bg4 7. Be2 Qe7 8. O-O
Nd7 9. Re1 O-O-O 10. Qd3 g6 11. Qa6 bxa6 *
Position (FEN): 2kr1bnr/p2nq2p/p1p2pp1/3p4/3P1Bb1/2N2N2/PPP1BPPP/R3R1K1 w - - 0 12
White to move.
Themes: Queenside Attack Middlegame Boden's Mate, Mate in 1 
Puzzle rating: 832
Best move: Bxa6#