Hello:

This is the work of several weeks. I collected all the opening test suites, which I could find over the internet. I created several separated files, which classify the opening lines between a range of plies. They are also ordered by eco opening. I removed the duplicate lines too. However, they are not engine checked to verify if the resulting position is superior for any side. Special attention are the files with 16,20 and 24 plies, which have only opening lines with that length. All the files are prefixed with op....

op1to7plies.pgn
op8to15plies.pgn
op16plies.pgn
op17to19plies.pgn
op20plies.pgn
op21to23plies.pgn
op24plies.pgn
op25pliesplus.pgn


A final special file, which was engine checked, wc16plies.pgn, has opening lines derived from all the zonal, interzonal, candidates and world championship chess matches of all times. Also the duplicates were removed from this file.

You can download the compendium here

Kind regards, roraima. idea