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Added Botsu Bako problem Oct 21, 2016

Guten's Norinori problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.

Maintenance finished Oct 21, 2016

About 10 minutes after 05:00 Oct 21, 2016(UTC).

Due to scheduled maintenance, you could not access to the nikoli.com. Sorry for the inconvenience.

Result of the 251st nikoli.com Puzzle Championship Oct 15, 2016

Congratulations! K.N.Y. won the 251st puzzle championship! The winner's name is now displayed and will remain on the Champion page of nikoli.com Hall of Fame.

The next puzzle championship will be held from Sat. Oct 29, 2016 13:00 (UTC). The time trial problem will be a Hitori puzzle contributed by nyoroppy.

Added Slitherlink, Yajilin and Norinori puzzles to The pick of the puzzles page Oct 3, 2016

Most popular Slitherlink, Yajilin and Norinori puzzles are available to members. Play them in the members area, in The pick of the puzzles page.

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