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.
Result of the 217th nikoli.com Puzzle Championship Jun 27, 2015
Congratulations! volxa won the 217th 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. Jul 11, 2015 13:00 (UTC). The time trial problem will be a Shakashaka puzzle contributed by the ax and sword.
Maintenance finished Jun 19, 2015
About 15 minutes after 05:00 Jun 19, 2015(UTC).
Due to scheduled maintenance, you could not access to the nikoli.com. Sorry for the inconvenience.
Added Botsu Bako problem Jun 16, 2015
SAKAMOTO, Nobuyuki's Satogaeri problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.
Added Shikaku, Sudoku and Shakashaka puzzles to The pick of the puzzles page Jun 1, 2015
Most popular Shikaku, Sudoku and Shakashaka puzzles are available to members. Play them in the members area, in The pick of the puzzles page.