Chess puzzle (Advantage)
Opening: Vant_Kruijs_Opening, Vant_Kruijs_Opening_Other_variations
Moves: 1. e3 e5 2. d3 Nc6 3. h3 Nf6 4. a3 d5 5. g3 Be6 6. b3 Bd6 7. Bg2 h6 8. Bb2 a6
9. Ne2 Qe7 10. Nd2 g5 11. b4 b5 12. Nb3 Kd7 13. d4 e4 14. Nc5+ Bxc5 15. dxc5 a5
16. c3 axb4 *
Position (FEN): r6r/2pkqp2/2n1bn1p/1pPp2p1/1p2p3/P1P1P1PP/1B2NPB1/R2QK2R w KQ - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1421
Best move: cxb4