GRhino Preferences - AI Tab

Computer player

Select the color of the AI player. You can have AI playing against itself by setting this to Both.

Computer level

This setting provides an easy control for various other AI options below to a predefined value. Due to some flaws in the current AI, the AI strength appears to peak at some point and does not increase with the level settings is higher.

Mid game search depth

This controls the number of lookahead move the AI search is performed during the mid game stage. During this stage, the AI evaluates the position using pattern and parity score. It can be configured only when the option Computer level is set as Custom.

Winning move search empties

This controls when to use winning move search instead of mid game search. This search is started if the number of empty squares on the board reach the specified number. The AI tries to find a move that always results in a win for AI and terminates the search if one is found. It can be configured only when the option Computer level is Custom.

Perfect end game search empties

This controls when to use perfect end game search. The AI evaluates the board using final disk counts as search criterion. It can be configured only when the option Computer level is Custom.

Randomness

It adds the amount of randomness to board scores during mid game and end game search.

Open book variation

It effects AI during opening stage of the game. The open book is based on move popularity. With None, the AI plays the same opening every game, with the most popular moves always chosen. For higher settings, the choice of openings becomes more varied. But the strength of AI is weaken if the setting is too high.