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24 hour janken - 2nd world championship Jun 20, 2017

The 24 hour janken - 2nd world championship Please join nikoli original easygoing party game The 24 hour janken. The winners will receive an original Nikoli T-shirt.

Maintenance finished Jun 16, 2017

About 10 minutes after 05:00 Jun 16, 2017(UTC).

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

Result of the 268th nikoli.com Puzzle Championship Jun 10, 2017

Congratulations! bf81 won the 268th 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. Jun 24, 2017 13:00 (UTC). The time trial problem will be a Heyawake puzzle contributed by T.Karino.

Added Shikaku, Sudoku and Shakashaka puzzles to The pick of the puzzles page Jun 1, 2017

Most popular Shikaku, Sudoku and Shakashaka puzzles are available to members. Play them in the members area, in The pick of the puzzles page.

Added Botsu Bako problem Apr 21, 2017

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


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