Chess puzzle (Advantage)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+
8. Nbxd2 d5 9. exd5 Nxd5 10. O-O O-O 11. Bb5 Nce7 12. Re1 c6 13. Bc4 Bg4 14. h3
Bxf3 15. Nxf3 Qd7 16. Qd3 f6 17. Re4 Ng6 18. Qb3 Rfe8 19. Rae1 Rxe4 20. Rxe4 a5
21. Bxd5+ cxd5 22. Re1 a4 23. Qb4 Rc8 24. Nd2 Rc2 25. a3 h6 26. b3 Qf5 27. bxa4
*
Position (FEN): 6k1/1p4p1/5pnp/3p1q2/PQ1P4/P6P/2rN1PP1/4R1K1 b - - 0 27
Black to move.
Themes:  Endgame  
Puzzle rating: 2350
Best move: Nf4