Engine parameters: click to set the engine parameter available for the selected engine.

 

Use Book/Use Livebook : Active those Databases for the access.

 

Hash table size: This is important if you are looking for optimum strength, especially in longer time control.

 

Permanent brain is the term for thinking on the opponent's time. This is an advantage because the engine often guesses what the opponent is going to play and then has already calculated its reply.

 

Use Tablebases are special endgame databases which allow the program to play five-piece endings perfectly (even find them in the search).

 

Smart CPU usage

On a computer with hyperthreading (i7 4 cores + 4 hyperthreading) a deep engine only starts with 4 threads/processes. On a computer without hyperthreading (i5, AMD) it starts with n-1 threads/processes. If you turn this option off it starts as in the older version.

 

Exception: The user has explicitly defined the number of threads/processes, for instance by defining a UCI engine.