Recommended to set it ON for analysis, OFF for games.ĭisplay Upperbounds - With this OFF Rybka would not tell the user when a fail move happened, so if you were away from the computer you wouldn't have a way to know. Use Large Pages - After you set "lock pages in memory" in the OS, expect some 15% speed up if you give her 1GB Hash (or more, less hash should also give benefits but not as dramatic - only lasts until you unload the engine, then you'll probably have to reboot the computer for this to take effect again).Īlways Score Main Move - With this OFF Rybka would move into looking for alternative moves in fail lows, with ON she will first give the move a score. NalimovUsage - Same as in Rybka 3 (affects how much she is slowed by tablebases, default should be best). Inherit should be to start the main process at the same priority of the GUI. Main Process Priority / Child Process Priority: Changes the engine priority without needing to visit the Task Manager. Max CPU - The number of cores that Rybka will use, if this number is higher than your cores, Rybka will use them all.ĬPU usage - In case you want to use less than one core, set it in this parameter. XLog - Write stuff to a HTML file (seems to only work for Opera Browser.) Log - Write stuff (like, communication with the GUI) to a file.
There is a button entitled "Engine Parameters" which opens a dialog with some options: When you load an engine with the function key F3 you should select the engine that you want to load. You can modify the parameters of the engine. It is possible that in some circumstances other settings lead to better results, but for the best overall performance and strongest play it is recommened that you leave the default settings unchanged. Note: The default configuration of the engine has been carefully tested. Different parameters may be available in different engines, not all of the ones given below may appear in your default. You will often be able to achieve a higher performance in specific situations (e.g., playing very fast games, solving tactical positions or studies). Here are examples of the parameters you can set in most engines to influence their playing style. Each engine will present the parameters that are relevant to its algorithms.
Now, you can change the settings that affect the playing style of the engine. To do so, click the button "Engine parameters" in the engine window. Many of the engines available have special parameters you can set. Menu: Engine – Change Main Engine - Advanced– Engine parameters