Manual de Houdini 3 2012 | Page 249

Reference

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· Soft Probe Depth is the earliest search depth for EGTB probing that uses only the
memory cache. You can reduce this value if you are running less than 4 threads.

3.8.20 Extended Options in the Engine Window
In the engine window the user now sees a new display of the number of processors
used. This display is only relevant for computer systems with several processors and
programs that are able to use more than one processor.

Clicking the CPU button in the engine window allows the user to change the number of
processors being used.

3.8.21 Endgame databases
Many chess programs can play all important major piece endings with four and five
men on the board perfectly. This is to be taken literally.
They contain full information on every legal position that is possible in these endings.
At any stage, the program knows whether the position is won, lost or drawn, and how
many moves it takes to win or lose (assuming perfect play by both sides).
The endgame databases are in the Nalimov format and are know as "Tablebases".

Eugene Nalimov from Novosibirsk (currently in Redmond) wrote the powerful algorithms

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