Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Steinitz_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bg4 5. c3 Nf6 6. Re1 Be7 7. d4 O-O 8. d5
Nb8 9. h3 Bh5 10. g4 Nxg4 11. hxg4 Bxg4 12. Qd3 c6 13. Ba4 b5 14. Bc2 f5 15.
Nh2 Bh5 16. exf5 Bg5 17. dxc6 Nxc6 18. Qd5+ Kh8 19. Qxc6 *
Position (FEN): r2q1r1k/p5pp/2Qp4/1p2pPbb/8/2P5/PPB2P1N/RNB1R1K1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1564
Best move: Bxc1