Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Exchange_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. Nf3 c6 7. Qb3 Qa5 8.
e3 Ne4 9. Bd3 Bb4 10. O-O Bxc3 11. bxc3 Qxc3 12. Bxe4 Qxb3 13. axb3 dxe4 14.
Nd2 f5 15. Nc4 Kf7 16. f3 exf3 17. Rxf3 Nb6 *
Position (FEN): r1b4r/pp3kpp/1np5/5pB1/2NP4/1P2PR2/6PP/R5K1 w - - 1 18
White to move.
Themes:  Middlegame  
Puzzle rating: 1971
Best move: Nxb6