Chess puzzle (Advantage)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. Be2 Bg4 6. O-O e6 7. d3 Be7 8.
Bd2 c6 9. h3 Bxf3 10. Bxf3 O-O 11. Nd5 Qd8 12. Nxe7+ Qxe7 13. Qe1 Nbd7 14. d4
Rfe8 15. Bb4 Qd8 16. Bc3 Rc8 17. Qd2 Nb6 18. Ba5 Nc4 19. Bxd8 Nxd2 20. Bxf6
Nxf1 *
Position (FEN): 2r1r1k1/pp3ppp/2p1pB2/8/3P4/5B1P/PPP2PP1/R4nK1 w - - 0 21
White to move.
Themes: Defensive Move Endgame  
Puzzle rating: 1639
Best move: Bg5