"What Is It?" - Sudoku Contest : 25th to 29th Oct

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Instructions Booklet
Sudoku Booklet (10 pages)
(Please save the pdf into your computer and print using Acrobat reader to avoid potential printing issues. Read this post for details.)

Solutions Booklet

About "What is it?" Contest

A selected round from 12th World Sudoku Championship for those enthuasts who are not participating in the championship.


You may start ""What Is It?" - Sudoku Contest" any time during the weekend of 25th to 29th Oct.

Your timer will start when you click "Start "What Is It?" - Sudoku Contest" — then you will have 50 minutes to solve and submit your answers.

A timer will be shown the answer page with the remaining time.


If you have any questions or doubts or suggestions, please ask in the forum.

New Users?

New users must register here (free) to be able to participate.