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About 130 new puzzles a month!

Members of 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

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Result of the 197th Puzzle Championship Sep 19, 2014

Congratulations! wrhtnarz won the 197th puzzle championship! The winner's name is now displayed and will remain on the Champion page of Hall of Fame.

The next puzzle championship will be held from Sat. Oct 4, 2014 13:00 (UTC). The time trial problem will be a Nurikabe puzzle contributed by aiko.

Maintenance finished Sep 19, 2014

About 25 minutes after 05:00 Sep 19, 2014(UTC).

Due to scheduled maintenance, you could not access to the Sorry for the inconvenience.

Author round-table Vol.21Sep 8, 2014

The guests this time are Casty and -4. In the 4th round-table, we talked about radical problems where a lot of originality left a strong impact on solvers. It is the opposite we discuss today. We will talk about problems that aren't radical. From Nikoli we have NyanBaz and Nob.

Added Hitori, Kakuro and Ripple Effect puzzles to The pick of the puzzles page Sep 3, 2014

Most popular Hitori, Kakuro and Ripple Effect puzzles are available to members. Play them in the members area, in The pick of the puzzles page.

Added Botsu Bako problem Aug 25, 2014

nyoroppyi's Akari problem is open to members. Try it out on the Botsu Bako (Extra Special Problems) page in the members area.

Results of the Nikoli Derby - 13th world championship Jul 17, 2014

The Nikoli Derby was developed by nikoli as a party game.

Look here for the results of The Nikoli Derby - 13th world championship.

We hope you are one of the winners!

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