Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Nxd4 6. Bxd4 Bxd4 7. Qxd4 Nf6
8. Nc3 O-O 9. Bc4 Re8 10. O-O-O a6 11. e5 Nh5 12. e6 fxe6 13. g4 Nf6 14. g5 Nd5
15. Nxd5 exd5 16. Qxd5+ Kh8 17. Rhg1 c6 18. Qf5 d5 19. Qf4 dxc4 *
Position (FEN): r1bqr2k/1p4pp/p1p5/6P1/2p2Q2/8/PPP2P1P/2KR2R1 w - - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 838
Best move: Rxd8