Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Gunsberg_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. a3 Nf6 4. Nc3 Bc5 5. h3 O-O 6. d3 Re8 7. Nd5 Nxd5 8.
exd5 Nd4 9. Be2 Nxe2 10. Qxe2 d6 11. O-O c6 12. c4 cxd5 13. cxd5 b5 14. Ng5 h6
15. Nf3 Bb7 16. Qe4 Qd7 17. Nh4 Qe7 18. Nf5 Qf6 19. Qg4 *
Position (FEN): r3r1k1/pb3pp1/3p1q1p/1pbPpN2/6Q1/P2P3P/1P3PP1/R1B2RK1 b - - 9 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1574
Best move: Bc8