I'm planning to make an extensive list ordered lexicographically by PSCC (pawn structure classification codes).
(to be continued)
The most original opening Saragossa: Queen's Knight appeared in Lucena-Quintana game 500 years ago :
The Sicilian defense: Wing gambit was played already by Greco in 1620.
Greco also played and studied the French defense.
I'm planning to make an extensive list ordered lexicographically by PSCC (pawn structure classification codes).

(to be continued)