About 130 new puzzles a month!
Members of nikoli.com can enjoy new puzzles everyday at your own exclusive page.
No payment is necessary for the first month by credit card. A perfect chance to enjoy and get to know nikoli.com.
Announcement of the maintenance work Apr 14, 2014
from Fri, Apr. 18th 05:00(UTC), about 2 hours
You will not able to get access to the nikoli.com during this time. Sorry for the inconvenience.
Added Botsu Bako problem Apr 7, 2014
aspirin's Slitherlink problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.
Result of the 185th nikoli.com Puzzle Championship Apr 6, 2014
Congratulations! motty won the 185th 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. Apr 19, 2014 23:00 (UTC). Please note the start time. The time trial problem will be a Hitori puzzle contributed by T.Karino.
Added Slitherlink and Yajilin puzzles to The pick of the puzzles page Apr 2, 2014
Most popular Slitherlink and Yajilin puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
2014's April Fools' pageApr 2, 2014
2014's April Fools' page can be seen here. Get puzzles by "Puzzle Gacha".
Author round-table Vol.16Mar 19, 2014
Results of the Nikoli Derby - 12th world championship Oct 30, 2013
The Nikoli Derby was developed by nikoli as a party game.
Look here for the results of The Nikoli Derby - 12th world championship.
We hope you are one of the winners!