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He holds a M.Sc. and Ph.D. from [https://en.wikipedia.org/wiki/University_of_Tokyo University of Tokyo] on [[Depth-First|depth-first]] [https://en.wikipedia.org/wiki/And%E2%80%93or_tree and-or tree] search algorithms, in particular depth-first [[Proof-Number Search|Proof-number search]],
and was member of [[Hiroshi Imai|Hiroshi Imai's]] research laboratory <ref>[http://www-imai.is.s.u-tokyo.ac.jp/members.html Imai Laboratory: Members]</ref>.
In the 90s, along with [[Yasushi Tanase]], [[Akihiro Kishimoto]] and [[Norifumi Gotou]], Ayumu Nagai was co-author of the [[Shogi]] program [[IS ShogiISshogi]] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=255 IS ShogiISshogi's ICGA Tournaments]</ref> <ref>[http://www2.computer-shogi.org/wcsc/csc8_e.html 8th Computer Shogi Championship]</ref>, multiple winner and top finisher of CSA tournaments <ref>[http://www2.computer-shogi.org/index_e.html Computer Shogi Association]</ref> and [[Computer Olympiad|Computer Olympiads]].
=Selected Publications=
