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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 193rd Puzzle Championship Jul 26, 2014

Congratulations! mizuike won the 193rd 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 Sun. Aug 10, 2014 13:00 (UTC). Please note the start time. The time trial problem will be a Heyawake puzzle contributed by -4.

Author round-table Vol.20Jul 22, 2014

Today our theme is Ripple Effect. It's a comparatively new puzzle. There hasn't been a lot of talk about Ripple Effect. What kind of a story can we expect to hear here? The guests are Turing-Joe Jr. and T. Karino. From Nikoli we have Nob and NyanBaz.

Maintenance finished Jul 18, 2014

About 15 minutes after 05:00 Jul 18, 2014(UTC).

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

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!

Added Botsu Bako problem Jul 14, 2014

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

Added Heyawake and Masyu puzzles to The pick of the puzzles page Jul 1, 2014

Most popular Heyawake and Masyu puzzles are available to members. Play them in the members area, in The pick of the puzzles page.

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