[Event "Paris"] [Site "?"] [Round "0"] [White "de Riviere"] [Black "Morphy"] [Result "0-1"] [ECO "C57"] [Opening "Two Knights: 4.Ng5"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 { This double attack on Black's f-pawn is as old as the game of chess.} 4... d5 5. exd5 Na5 {The classical system of counterattack for Black. Instead of recapturing the pawn at d5, Black goes after the enemy bishop.} 6. d3 { This move allows Black to take the initiative. Better was 6.Bb5+ 6.Bb5+ c6 7. dxc6 bxc6 8.Be2 h6 9.Nf3 e4 10.Ne5 Bd6 Where Black's lead in development compensates for his lost pawn.} 6... h6 {Black drives back the White knight.} 7. Nf3 e4 8. Qe2 Nxc4 9. dxc4 Bc5 10. h3 {10.Bf4 O-O 11.Nfd2 Bg4 12.Qf1 Black has the advantage due to his lead in development.} 10... O-O 11. Nh2 Nh7 { Black shows a very deep understanding of the position since he realizes that piece play alone will not break through White's position. He prepares a pawnstorm with the f-pawn leading the way.} 12. Nd2 f5 13. Nb3 Bd6 14. O-O Bxh2+ 15. Kxh2 f4 { Black has the advantage due to his active pieces and White's vulnerable king.} 16. Qxe4 Ng5 { The knight enters the game with a gain of tempo on the White queen.} 17. Qd4 Nf3+ { A beautiful sacrifice which takes advantage of White's light square weaknesses. } 18. gxf3 Qh4 19. Rh1 Bxh3 20. Bd2 Rf6 { Here White resigned, lacking any method of preventing checkmate.} 21. Qd3 Qxf2+ 22. Kxh3 Qg3# {Mates.} 0-1