Chess puzzle (Advantage)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nf3 Qe6+ 4. Be2 Nc6 5. O-O Qg6 6. Bd3 Bf5 7. Nh4 Bxd3
8. Nxg6 Bxg6 9. d4 Nb4 10. Qf3 O-O-O 11. Be3 Nxc2 12. Nc3 Nxa1 13. Rxa1 e6 14.
a4 Nf6 15. Rb1 Bxb1 16. Nxb1 Bb4 17. h3 Rhf8 18. Qd1 Ne4 19. f3 Ng3 20. Qc2 e5
21. dxe5 Nf5 22. Bf4 Nd4 23. Qc4 Ba5 24. b4 Bb6 25. a5 Ne2+ 26. Kf1 Nxf4 27.
axb6 axb6 28. Nc3 Ne6 29. Nd5 Rd7 *
Position (FEN): 2k2r2/1ppr1ppp/1p2n3/3NP3/1PQ5/5P1P/6P1/5K2 w - - 4 30
White to move.
Themes: Pin, Queenside Attack Endgame  
Puzzle rating: 1100
Best move: Nxb6+