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Katsutoshi Seki's private page
Shogi, Chess, Backgammon
Chess playing system
Shogi and Chess variant
Tsume Shogi (Shogi Mating Problems)
Copyright of game score
Backgammon
My another hobby
Other sites
Official page
where I am working
Blog
Keeping miscellaneous ideas
Questions or comments to
seki@ylug.org
or
Comment form