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280th Puzzle Championship Nov 24, 2017

Puzzle Championship nikoli.com holds the 280th puzzle championships on our members page on Sun. Nov 26, 2017 13:00 (UTC). The first correct solution is the winner. Start right away and hurry, race, dash to solve it and submit it immediately!

Maintenance finished Nov 17, 2017

About 10 minutes after 05:00 Nov 17, 2017(UTC).

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

Added Nurikabe, Numberlink and Satogaeri puzzles to The pick of the puzzles page Nov 1, 2017

Most popular Nurikabe, Numberlink and Satogaeri puzzles are available to members. Play them in the members area, in The pick of the puzzles page.

Added Botsu Bako problem Oct 20, 2017

SAKAMOTO, Nobuyuki's Numberlink problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.

Results of the 24 hour janken Sep 12, 2017

24 hour janken is a simple and easy game. It is a championship with janken (the well known rock-paper-scissors game), which is a popular game among Japanese.

Look here for the results of the 24 hour janken.

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