Scholia: Reversed, Opposite and Centrosymmetric Variations

It's given by symmetries of the chessboard. I give an example, starting with Sicilian Defense :

King's English = Reversed Sicilian:

Dutch Defense = Opposite Sicilian:

Dutch Bird = Centrosymmetric Sicilian:

It's quite useful for naming and other taxonomic issues, concerning pawn structures.

I play all 4 

the dutch, the Sicilian, the bird's, and the English

Nice!

Unfortunately the Dutch and Bird have no relation at all to the Sicilian and King's English, in a strategic sense, because the asymmetric positioning of the King and Queen changes the entire focus of the openings.

Lumping all four of those openings together because of a visual or cosmetic similarity is stamp collecting, not chess.

@blueemu you are absolutely correct the dutch and bird are COMPLETELY different than the Sicilian and English trust me I play all four

ok

normal and centrosymmetric scandi

reversed and opposite scandi

scandinavian has only 2 variants

interesting

also

normal and reversed open game

opposite and centrosymmetric open game

open game also has only 2 variants

but in a different way

what about normal and opposite vs reversed and centrosymmetric? is it possible that normal and opposite are the same and reversed and centrosymmetric being same for some opening? if so, give an example.

interesting questions arise.

then again, the scandinavian and englund are completely different and same with open and closed game. 

whatever.

A simple example of fully symmetric pawn structure :

Wow, it has an official name: Beyer Gambit.

yeah

but im asking for something else

what about normal and opposite vs reversed and centrosymmetric? is it possible that normal and opposite are the same and reversed and centrosymmetric being same for some opening? if so, give an example. 

this means not fully symmetric but with 2 groups

normal and opposite being the same and reversed and centrosymmetric are same to each other but different to the other group

nvm i think this is impossible

Yes, 2 types of symmetries will imply the third too.

Nonetheless, it makes sense at the level of pawn structures. 😎