Chess puzzle (Advantage)
Opening: Queens_Gambit, Queens_Gambit_Other_variations
Moves: 1. d4 d5 2. c4 b6 3. Nc3 a6 4. Nf3 h6 5. a3 Nf6 6. e3 Bg4 7. Bd3 Nc6 8. h3 Bh5
9. O-O e6 10. b4 Bd6 11. b5 Na5 12. Rb1 dxc4 13. Be2 Nb3 14. Bxc4 Nxc1 15. Rxc1
Bxa3 16. Ra1 Bb2 17. Rxa6 Rxa6 *
Position (FEN): 3qk2r/2p2pp1/rp2pn1p/1P5b/2BP4/2N1PN1P/1b3PP1/3Q1RK1 w k - 0 18
White to move.
Themes:  Middlegame  
Puzzle rating: 928
Best move: bxa6