About 120 new puzzles a month!
Members of nikoli.com can enjoy new puzzles everyday at your own exclusive page.
What's new
The Nikoli Derby - 6th world championship Jul 3, 2009
Previous the Nikoli Derby that held only on the English pages, we received maximum 99 horses' entry. But for this World Championship , we accept Japanese horses from Japanese pages, so we expect more than 500 horses will be lined up at the start line.
The winners will get an original nikoli goods. Make sure you enter.
Numberlink sample problems added Jul 2, 2009
nikoli.com now has 10 sample problems of Numberlink puzzles. The 2 added problems are "Hard". Give them a try. Can you already solve hard Numberlink problems?
nikoli.com will start to release Numberlink puzzles in the members area from Jul 10th 2009.
Added Heyawake and Masyu puzzles to The pick of the puzzles pageJul 1, 2009
Most popular Heyawake and Masyu puzzles are available to members. Play them in the members area, in The pick of the puzzles page.
Numberlink sample problems added Jun 29, 2009
nikoli.com now has 8 sample problems of Numberlink puzzles. The 3 added problems are "Medium" and "Hard". Give them a try. Can you already solve hard Numberlink problems?
nikoli.com will start to release Numberlink puzzles in the members area from July 10th 2009.
Result of the 62nd nikoli.com Puzzle Championship Jun 26, 2009
Congratulations to MOMO! MOMO won the 62nd puzzle championship! MOMO'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 10, 2009 13:00 (UTC) and the time trial problem is a Akari puzzle that was contributed by Miya.
Added Botsu Bako problem Jun 4, 2009
aspirin's Extra Hard Hitori problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.
Author interviews Vol.8May 21, 2009
Yuichi Saito: male, twenty eight years old (in 2007), working in a company as an engineer - making things, a doctor of engineering. His hobbies other than puzzles are traveling abroad and skiing.
A Zen Day May 2, 2009
We are declaring the coming May 10th as "A Zen Day." In Japanese "A Zen" means to do things Extra Hard. Please stay cool though, here we will release four extra hard puzzles at the members area.
- 00:00(JST): A giant size Hashiwokakero and a 36x20 Masyu
- 12:00(JST): A 36x20 Akari and a 36x20 Nurikabe
You will sit in front of your screen like an ascetic Zen monk. May 10th may be your longest day ever!
Additional function for members to evaluate puzzles Apr 17, 2009
We have added a new function where you can assign an evaluation (rank) for each of your puzzles. You evaluate and assign ranks according to your own standards. You can input the rank you select on the "solution status" page.
You are also able to rearrange your puzzles on the "problem list" based on your ranking.
