Chess Theory Table   -   1 e5 e5 systems for White smoking-knight
  1 2 3 4 5 Article Position
C21 e4
e5
d4
 
      Hogeye Gambit Screenshot
C43   Nf3
Nf6
      Petroff Defense

Thanks to Kenilworth Chess Club.

Screenshot
C44    
Nc6
d4
ed4
Bc4
 
  Scotch Gambit Screenshot
C50     Nc3
Nf6
d4
 
  Scotch Four Knights Screenshot
C50     Bc4
Bc5
0-0
 
  Giuoco Piano
Kolty-Lange Attack
Screenshot
C54       c3
 
  Giuoco Piano
Steinitz-Sheveshnikov
Screenshot
C55      
Nf6
d4
ed4
0-0
 
Two Knights Defense
Morphy Variation
Screenshot
C55         e5
 
Two Knights Defense
Modern Variation
Screenshot