Arasan is a chess program that includes an opening "book" with over 600,000 moves.

Arasan comes with a graphical user interface, but it can also be used together with Winboard, a separate interface program, and other interfaces that follow the Winboard or UCI standard. One
example is Arena Chess.

Arasan's interface has on-line help if needed, including setup and usage information for using Arasan with Windows user interfaces, such as Winboard.

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