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 Botsu Bako problem Feb 24, 2015
Asaokitan's Nurikabe problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.
The Nikoli Derby - 14th world championship Feb 24, 2015
Please join nikoli original easygoing party game The Nikoli Derby. The winners will receive an original Nikoli T-shirt.
Result of the 208th nikoli.com Puzzle Championship Feb 20, 2015
Congratulations! Kota won the 208th 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. Mar 7, 2015 13:00 (UTC). The time trial problem will be a Masyu puzzle contributed by bay wolf Jr.
Maintenance finished Feb 20, 2015
About 25 minutes after 05:00 Feb 20, 2015(UTC).
Due to scheduled maintenance, you could not access to the nikoli.com. Sorry for the inconvenience.
Added Akari and Hashiwokakero puzzles to The pick of the puzzles page Feb 3, 2015
Most popular Akari and Hashiwokakero puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
Author interviews Vol.41Jan 13, 2015
Our guest this time is oku-yama. He is in his early 30s. He is doing clerical work. He tells us that it's the type of job where he is required to be very very cautious.