Chess puzzle (Advantage)
Moves: 1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nb6 5. Nf3 e6 6. Nc3 Bb4 7. a3 Bxc3+ 8.
bxc3 c6 9. e5 h6 10. Bd3 N8d7 11. g4 c5 12. g5 h5 13. g6 f6 14. exf6 Nxf6 15.
Ne5 Qe7 16. Qb3 Bd7 17. a4 O-O-O 18. Nf7 Rdf8 19. Bf4 Rxf7 20. gxf7 Qxf7 21.
dxc5 Nbd5 22. Rb1 Bc6 23. Bd6 Ng4 24. Rf1 Nxh2 25. a5 *
Position (FEN): 2k4r/pp3qp1/2bBp3/P1Pn3p/8/1QPB4/5P1n/1R2KR2 b - - 0 25
Black to move.
Themes:  Middlegame  
Puzzle rating: 1556
Best move: Nf3+