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What's new

Added Botsu Bako problem Feb 21, 2017

T.Karino's Nurikabe problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.

Result of the 260th nikoli.com Puzzle Championship Feb 17, 2017

Congratulations! volxa and Kota won the 260th 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 Fri. Mar 3, 2017 13:00 (UTC). The time trial problem will be a Akari puzzle contributed by T.Karino.

Maintenance finished Feb 17, 2017

About 50 minutes after 05:00 Feb 17, 2017(UTC).

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

Added Akari and Hashiwokakero puzzles to The pick of the puzzles page Feb 2, 2017

Most popular Akari and Hashiwokakero puzzles are available to members. Play them in the members area, in The pick of the puzzles page.

Results of the Nikoli Derby - 16th world championship Jan 30, 2017

The Nikoli Derby was developed by nikoli as a party game.

Look here for the results of The Nikoli Derby - 16th world championship.

We hope you are one of the winners!

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