Changes

Typically the probe process requires some computing and it may access storage and decompress which is usually so slow, compared with one stored in memory. All may make it be a slow one. An engine that probes EGTB when searching may make the whole search be slower. Sometimes the benefit from probing EGTBs maybe not enough to cover the loss of slower search. That’s why the probing should be planned and implemented carefully. EGTB files may have to store in fast storage and/or using some huge systems’ caches. The good point is that the engine can stop searching on the branch probed the EGTB. 

* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=76089 Asynchronous tablebase lookups] by [[Steinar H. Gunderson|Sesse]], [[CCC]], December 17, 2020 <ref>[https://kernel.dk/io_uring.pdf?source=techstories.org io_uring.pdf]</ref>'''2021'''* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=76089 Asynchronous tablebase lookups76659 Stalemate Tablebases] by [[Steinar H. Gunderson|Sesse]]Dries De Clercq, [[CCC]], December 17February 21, 2020 <ref>2021 » [[https://kernel.dk/io_uring.pdf?source=techstories.org io_uring.pdfStalemate]]</ref>