Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Other_variations
Moves: 1. d4 a6 2. c4 Nf6 3. Nc3 e6 4. e4 Bb4 5. Bg5 O-O 6. e5 h6 7. exf6 hxg5 8. fxg7
Kxg7 9. h4 Rh8 10. Bd3 Nc6 11. Bc2 Qf6 12. a3 Nxd4 *
Position (FEN): r1b4r/1ppp1pk1/p3pq2/6p1/1bPn3P/P1N5/1PB2PP1/R2QK1NR w KQ - 0 13
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1876
Best move: axb4