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If the engine needs to know the DTZ value (which is only necessary when a TB root position has been reached), the probing code may have to do a 1-ply search to get to the "right" side of the DTZ table.
For 6-piece TBs, DTZ is 81.9GB when storing only the smaller side of each table. Storing both sides might require perhaps 240GB.
[[Morgan Houppin]] explained why his chess engine [[Stash]] doesn't have Syzygy probe code, March 25, 2021 <ref>[http://talkchess.com/forum3/viewtopic.php?f=2&t=76927#p888045 Re: Stash has lost 2 game because of NO EGTB] by [[Morgan Houppin]], [[CCC]], March 25, 2021</ref> :
Syzygy probing is a hell of a mess, and I don't want to plug two thousand lines of foreign code that I don't understand, nor do I have the motivation to fully understand how Syzygy files are stored, and then write the additional two thousand lines of code to read them for a mere 5 Elo gain at TCEC.
=Endgame News=
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75973 Problem with Syzygy tablebase] by [[Elias Nilsson]], [[CCC]], December 03, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=76010 Can EGTB storage requirements be reduced using this scheme?] by mmt, [[CCC]], December 07, 2020
'''2021'''
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77267 Syzygy Tablebase Names: A very stupid exercise] by [[Andrew Grant]], [[CCC]], May 08, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77358 syzygy implementation] by [[Michael Hoffmann|Desperado]], [[CCC]], May 23, 2021
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77499 Syzygy bases from memory] by [[Ed Schroder|Ed Schröder]], [[CCC]], June 16, 2021 » [[KPK]]
=External Links=
