Chess puzzle (Crushing)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Other_variations
Moves: 1. d4 d5 2. e3 Bf5 3. Nf3 Nc6 4. a3 e6 5. c4 Qf6 6. Nc3 O-O-O 7. b4 Nxb4 *
Position (FEN): 2kr1bnr/ppp2ppp/4pq2/3p1b2/1nPP4/P1N1PN2/5PPP/R1BQKB1R w KQ - 0 8
White to move.
Themes:  Middlegame  
Puzzle rating: 977
Best move: axb4