Details of Program: Aya


Written by: Yamashita, Hiroshi


In its own language:

Aya traditionally used selective full board search up to 9 plies in 9x9. Search is extended 2 plies when horizon effect occurs. Evaluation function includes string capture search and connections search up to 5 plies (5 plies is 80 rating points stronger than 9 plies version because of fast evaluation function.). Eye recognition and group life and death are static.

It has been extended to use MC methods, and uses 3×3 pattern templates extracted from 10,000 professional games.

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