Added Heyawake and Masyu puzzles to The pick of the puzzles page Jul 1, 2016
Most popular Heyawake and Masyu puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
Result of the 243rd nikoli.com Puzzle Championship Jun 26, 2016
Congratulations! kurocchi won the 243rd 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. Jul 8, 2016 13:00 (UTC). We will set 2 kind of the time trial problems at the same time. Both puzzles are Numberlink puzzles, contributed by Ogawa Minori and Guten.
Maintenance finished Jun 17, 2016
About 10 minutes after 05:00 Jun 17, 2016(UTC).
Due to scheduled maintenance, you could not access to the nikoli.com. Sorry for the inconvenience.
Added Botsu Bako problem Jun 6, 2016
HIRO FUKUSHIMA's Heyawake problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.