Changes

Obviously, Perft(1) of the [[Initial Position|initial position]] is 20, Perft(2) 400. Data of Perft(10) up to Perft(13) was provided by [[Steven Edwards]], generated by [[Symbolic]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=46055 Perft FEN data] by [[Steven Edwards]], [[CCC]], November 18, 2012</ref> , when Perft(14)<ref>[http://www.talkchess.com/forum/viewtopic.php?t=61119&start=30 Re: yet another attempt on Perft(14)] by [[Ankan Banerjee]], [[CCC]], September 09, 2016</ref> and Perft(15)<ref>[http://www.talkchess.com/forum/viewtopic.php?t=64983&start=4 Re: perft(15)] by [[Ankan Banerjee]], [[CCC]], August 25, 2017</ref> were provided by [[Ankan Banerjee]].