opening repository for advanced club players

repertoire for advanced club players with ELO >1800.

White d4

according to Lichess Opening, 59% games start with e4, while 26% games start with d4.
Here it is recommend to play d4, as positional play is getting more important for ELO >1800.
If e4 is played instead until now, it is not recommend to change the opening, and rather
recommend my other blog aboutopening:

This opening repository does not cover the London System, as it is also covered by the blog above.
Here is the study:

according to lichess database, after d4, the most common moves:
Sf6 (38%), d5 (37%) are covered. Other moves like: e6, g6, c5, d6,c6 are not covered,
while it might be extended later, if I reach the level, or see high possibility that it is played on the
corresponding ELO level.

Black e4,c5 Sicilian Defense Four Knight

Here is the study

It does not cover the Anti-Sicilian, as it is covered in the study below.

Black e4,c5 Anti-Sicilian

Here is the study

It does not cover the open Sicilian, as it is covered in the study above

Black d4, Sf6 Nimzo Indian Defense

According to Lichess database, d4 is not that popular, and therefore,
I spend less effort on it than the e4.
Here is the study

The current opening repository does not cover other openings like English opening with c4,
as it is covered by the other blog.