I have downloaded the copies of Perfect and Revenge that are on this site. I noticed that out of 306 levels each, Perfect only contains 115 levels and Revenge contains only 292 levels.
I understand this site's position on "duplicate" levels, but this severely breaks up sets that were not intended to be broken up. In addition, I have already found "duplicates" in the Perfect and Revenge files of other levels in other files.
This leads me to believe that the "algorithm" for determining duplicates is actually just a list of "known duplicates" and not really an algorithm for searching out supposed duplicates.
This in itself makes the "duplicate" idea a farce. In addition, it is apparent to me that Thinking Rabbit did not consider these puzzles to be "duplicate", as they included them in more than one collection, with each version being altered in some manner to distinguish it from the others.
This can be defined as follows: Up is NOT down, left is NOT right. Just because a piece of software allows you to flip a puzzle around in order to make a different solution work does not make the puzzle a duplicate. Any time you have to alter the orientation of a puzzle you are changing it. Again, up is NOT down, left is NOT right. To get a grasp of what I am saying, try pasting the solution to Original #1 to a vertically flipped copy of that puzzle. Every Sokoban engine I know of will tell you that the solution is not valid for that puzzle.
Now that I have gotten that rant out of my system I will continue with my request. I do not expect that this site will change its position on duplicates, so I'm not asking for that. What I do want is a copy of Perfect and a copy of Revenge with all 306 levels in each set. Can anyone here point me to links for such copies?