Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Slav_Invitation
Moves: 1. Nf3 c6 2. e4 d5 3. exd5 cxd5 4. d4 Bf5 5. g3 Nc6 6. Bg2 e6 7. O-O Bg4 8.
Nbd2 Bb4 9. c3 Ba5 10. b4 Bc7 11. a4 Nge7 12. a5 a6 13. Qa4 b5 *
Position (FEN): r2qk2r/2b1nppp/p1n1p3/Pp1p4/QP1P2b1/2P2NP1/3N1PBP/R1B2RK1 w kq b6 0 14
White to move.
Themes:  Middlegame  En Passant
Puzzle rating: 1357
Best move: axb6