Chess puzzle (Advantage)
Opening: Rat_Defense, Rat_Defense_English_Rat
Moves: 1. d4 d6 2. c4 e5 3. Nf3 e4 4. Bg5 f6 5. Bh4 exf3 6. gxf3 g5 7. Bg3 Bf5 8. Nc3
Bh6 9. e3 Nc6 10. e4 Bd7 11. d5 Ne5 12. Bxe5 fxe5 13. Qe2 Qf6 14. O-O-O g4+ 15.
Kb1 gxf3 16. Qd3 Ne7 17. Nb5 Kd8 18. c5 dxc5 19. Qc4 Qb6 *
Position (FEN): r2k3r/pppbn2p/1q5b/1NpPp3/2Q1P3/5p2/PP3P1P/1K1R1B1R w - - 2 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1036
Best move: d6