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Thank you!

We have discontinued membership services from Sep 10th, 2018. Thank you so much for having played nikoli.com for many years.

All members will be able to log in until Mar 31st, 2019 and enjoy the puzzles published within the most recent 180 days as well as the puzzles in the "Botsu Bako" and "Pick of the puzzles" sections.

Maintenance finished Jan 18, 2019

About 2 minutes after 05:00 Jan 18, 2019(UTC).

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

Added Heyawake and Masyu puzzles to The pick of the puzzles page Jan 7, 2019

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

Results of the Nikoli Derby - 18th world championship Sep 27, 2018

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

Look here for the results of The Nikoli Derby - 18th world championship.

We hope you are one of the winners!

Result of the 300th nikoli.com Puzzle Championship Sep 7, 2018

Congratulations! MOR and LoveBeer won the 300th puzzle championship! The winner's name is now displayed and will remain on the Champion page of nikoli.com Hall of Fame.

This was the last championship. Thank you very much to all players!

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