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.
Added Shikaku, Sudoku and Shakashaka puzzles to The pick of the puzzles page Dec 3, 2013
Most popular Shikaku, Sudoku and Shakashaka puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
Result of the 176th nikoli.com Puzzle Championship Dec 1, 2013
Congratulations! RichardRoe won the 176th 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. Dec 14, 2013 13:00 (UTC). Please note the start time. The time trial problem will be a Hashiwokakero puzzle contributed by Ogawa Minori.
Author round-table Vol.13Nov 27, 2013
Maintenance finished Nov 15, 2013
About 30 minutes after 05:00 Nov 15, 2013(UTC).
Due to scheduled maintenance, you could not access to the nikoli.com. Sorry for the inconvenience.
Added Botsu Bako problem Nov 12, 2013
SAKAMOTO, Nobuyuki'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 - 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!