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==Pseudo Legal Moves==
To generate legal moves some programs have to make moves first, call a function to check if the function IsIncheck position incheck and then undo those moves. That makes the above Perft function to make and undo moves twice for all moves. Below code can avoid that problem and run much faster:
<pre>
u64 Perft(int depth)
'''2021'''
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=76430 Chinese chess Xiangqi perft results] by [[Maksim Korzh]], [[CCC]], January 27, 2021 » [[Chinese Chess Perft Results]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77054 PERFT transposition table funny?!] by [[Martin Bryant]], [[CCC]], April 10, 2021 » [[Transposition Table]], [[Memory]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=77069 Perft 7 -> 1.6 trillion moves] by [[Michael Byrne|MikeB]], [[CCC]], April 12, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77350 Being silly with perft and legal move generation] by [[Jakob Progsch]], [[CCC]], May 19, 2021 » [[Move Generation#Legal|Legal Move Generation]], [[En passant]]
* [http://talkchess.com/forum3/viewtopic.php?f=7&t=78119 Perft position to debug check-evasions via en passant capture] by [[Roland Tomasi]], [[CCC]], September 06, 2021
* [http://talkchess.com/forum3/viewtopic.php?f=7&t=78241 Perft test] by [[Pierluigi Meloni]], [[CCC]], September 24, 2021
* [http://talkchess.com/forum3/viewtopic.php?f=7&t=78230 Gigantua: 1.5 Giganodes per Second per Core move generator] by [[Daniel Infuehr]], [[CCC]], September 22, 2021
* [http://talkchess.com/forum3/viewtopic.php?f=7&t=78352 Gigantua: 2 Gigamoves per Second per Core move generator - Sourcecode Release] by [[Daniel Infuehr]], [[CCC]], October 07, 2021
=External Links=
