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 Sep 16, 2014
from Fri, Sep. 19th 05:00(UTC), about 2 hours
You will not able to get access to the nikoli.com during this time. Sorry for the inconvenience.
Author round-table Vol.21Sep 8, 2014
The guests this time are Casty and -4. In the 4th round-table, we talked about radical problems where a lot of originality left a strong impact on solvers. It is the opposite we discuss today. We will talk about problems that aren't radical. From Nikoli we have NyanBaz and Nob.
Result of the 196th nikoli.com Puzzle Championship Sep 5, 2014
Congratulations! neo0923 won the 196th 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. Sep 19, 2014 13:00 (UTC). The time trial problem will be a Masyu puzzle contributed by -4.
Added Hitori, Kakuro and Ripple Effect puzzles to The pick of the puzzles page Sep 3, 2014
Most popular Hitori, Kakuro and Ripple Effect puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
Added Botsu Bako problem Aug 25, 2014
nyoroppyi's Akari problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.
Results of the Nikoli Derby - 13th world championship Jul 17, 2014
The Nikoli Derby was developed by nikoli as a party game.
Look here for the results of The Nikoli Derby - 13th world championship.
We hope you are one of the winners!