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 Dec 19, 2014
from Thu, Dec. 25 05:00(UTC), about 2 hours
You will not able to get access to the nikoli.com during this time. Sorry for the inconvenience.
Result of the 203rd nikoli.com Puzzle Championship Dec 12, 2014
Congratulations! RichardRoe won the 203rd 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. Dec 26, 2014 13:00 (UTC). The time trial problem will be a Hitori puzzle contributed by Pencil Rocket.
Norinori!! Dec 10, 2014
nikoli.com started to release Norinori puzzles in the members area from Dec 10th(JST).
Enjoy the fun of solving a Norinori!
Added Shikaku, Sudoku and Shakashaka puzzles to The pick of the puzzles page Dec 3, 2014
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 Nov 19, 2014
Guten's Shakashaka problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.
Author round-table Vol.22Nov 10, 2014
Added Slitherlink and Yajilin puzzles to The pick of the puzzles page Oct 1, 2014
Most popular Slitherlink and Yajilin puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
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!