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Extra Puzzles
Circle 9 Plus 🔑
Please purchase
Circle 9 Plus
to unlock extra features and show your support.
Thank you!
You are upgraded to Circle 9 Plus.
Rules
Circle exactly one of each number from 1 to 9.
Each row, column, and 3x3 block must contain exactly one circled number.
Tips
Cross numbers out using logical reasoning.
Guessing is never required.
If you wish, read the
technique guide
.
+ Easy
+ Medium
+ Hard
+ Very Hard
