September Sudoku Contest 2026 ( 27th Sep to 4th Oct )

Links

Instructions Booklet
Puzzle Booklet ( 4 pages )
Timing / More Information
Online Solving
Discussion Thread

Online solving using Penpa is enabled in this contest. Make sure to read the F.A.Q. on online solving before starting the contest.

Supported browsers : Latest versions of Google Chrome, Microsoft Edge, Opera. At this point, we do not support Firefox.

Author

Riad Khanmagomedov

The official period for "September Sudoku Contest 2026" is over. However, you can participate unofficially using this link.

Your timer will start when you click "Start September Sudoku Contest 2026" — 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.

Instant Grading

Not submitted Wrong Correct
Link for Online Solving
Score Page
You must be logged on before you can start the contest.
Password for Puzzle Booklet :
In case the website goes down, send an email to logicmasteradmin@gmail.com with the answer keys. Anything within time will be considered, but only in the case of the website being down.