Chess puzzle (Advantage)
Opening: Benoni_Defense, Benoni_Defense_Kings_Pawn_Line
Moves: 1. d4 c5 2. d5 d6 3. c4 e6 4. e4 Nf6 5. Nc3 exd5 6. cxd5 a6 7. Nf3 b5 8. a3 Be7
9. b4 c4 10. a4 Bb7 11. Be2 a5 12. axb5 axb4 13. Rxa8 Bxa8 14. Na2 Qa5 15. Bxc4
b3+ 16. Bd2 Qxa2 17. Bxb3 Qa7 18. Be3 Qa5+ 19. Bd2 Qxb5 *
Position (FEN): bn2k2r/4bppp/3p1n2/1q1P4/4P3/1B3N2/3B1PPP/3QK2R w Kk - 0 20
White to move.
Themes: Pin Middlegame  
Puzzle rating: 892
Best move: Ba4