What kind of site?
Nikoli Co., Ltd. is a publishing company which published the first puzzle magazine in Japan in 1980, and since then has specialized in puzzle publication.
The world-wide famous "Sudoku" puzzle was named by Nikoli company president Maki Kaji. We are the best puzzle company in the world, and have been developing and providing a wide range of puzzles. This is our web site!
nikoli.com will release 3 or more problems a day, about 120 problems a month of 9 kinds of puzzles, all new and including Slitherlink, Nurikabe, Heyawake, Akari, Hitori, Masyu, Shikaku, Kakuro and Sudoku.
None of these puzzles have been published before and all are totally new and original.
All the problems are made by Nikoli puzzle creators who make puzzles for our main magazine "Puzzle communication Nikoli" and all puzzles are edited by Nikoli editors. We are confident that all of these puzzles are fun and enjoyable and we are sure you will enjoy them.
The nikoli.com web site consists of two parts; nikoli.com with "Everybody's page" which can be accessed by anyone and a page which is only for the members. All new problems are released on the members page, but some problems will be available on Everybody's page. When you become a member, you will be able to check all new problems and also save your puzzle solving history. If you are thinking about becoming a member, check out the members page.
How to enjoy puzzles of nikoli.com?
You can play the puzzles with your browser, but you will need the Adobe Flash Player. If you are using an old version of Adobe Flash Player, we recommend that you install the newest version.
There are some sample problems on everybody's page.
If you have trouble with the sample problems, refer to the recommended environment page.
Fun in the members area
As a member we will prepare your own exclusive page. There you will be able to record and see which puzzles you have solved and which are still unsolved by you. You can also save problems that you are working on. Each step in the solution of a puzzle can also be saved, and if you wish, you can make your history open to the public. If you do this last, you may be able to learn from others who are good (better?) at doing puzzles.
The nikoli.com site is accessed by a monthly membership fee. If you become a member, you have access to puzzles from the previous month (starting from the 11th of each month). We will make newly released puzzles available for 180 days, so if you are a member for 5 months, you will have 600 original problems to do anytime.
How much? How to pay?
Please refer to "How to join" page.
