Chess puzzle (Advantage)
Moves: 1. c4 Nf6 2. Nc3 e6 3. e4 Bb4 4. Nge2 b6 5. g3 Bb7 6. Bg2 d6 7. O-O O-O 8. d3
c5 9. Nf4 Bxc3 10. bxc3 Nbd7 11. Be3 e5 12. Nd5 Nxd5 13. exd5 f5 14. f4 Qf6 15.
Qd2 Rae8 16. Rf2 b5 17. Raf1 g6 18. fxe5 dxe5 19. Bg5 Qa6 20. Bh6 Rf7 21. cxb5
Qxb5 22. c4 Qa6 23. Qb2 Nf6 24. h3 Qd6 25. Bg5 Rb8 26. Qa3 a6 27. Be3 Rc8 28.
g4 f4 29. Bxf4 *
Position (FEN): 2r3k1/1b3r1p/p2q1np1/2pPp3/2P2BP1/Q2P3P/P4RB1/5RK1 b - - 0 29
Black to move.
Themes:  Middlegame  
Puzzle rating: 1031
Best move: exf4