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Limit Playing StrengthThere are three ways to limit the engine's playing strength:
1) For UCI-2 engines you can limit the playing strength to an ELO-value:
This is under Main Menu The playing strength is handled only by the engine. Arena just passes the command to the engine. If an engine supports this function, it should be the preferred way to make an engine weaker.
Under the engine configuration you have the possibility to reduce the strength of engines which are too good for your personal play. So, you go under Engines / Manage / Details to the engine you want to make weaker. Under the 'Special' tab you have the strength setting. Here you can set the strength to as low a 1% of the original playing strength.
How does it work? The engine gets a lower amount of time. The engine thinks it is playing under a lower time control with less time to make a move. With a strength of 50% Arena pretends to the engine, it is running with half the time of the level that is currently set. Example: You set the Level '40 moves in one hour'. With a strength of 50% the engine plays like '40 moves in 30 minutes'. 3) Proprietary ways of limiting the playing strength:
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