It is Sotehr's birthday! 🥳
Here's a highly symmetric setting to celebrate.
See also:
Solution code: Column 9, top to bottom.
on 6. May 2026, 09:28 by Sotehr
I experienced the full spectrum of emotions while solving this: awe at its beauty, joy for receiving such a gift, envy because I didn't set it myself, some anger and confusion while solving that deductions yielded so very few digits, and finally relief and satisfaction at the end.
Thank you so much for the gift. I really appreciate it.
| Difficulty: | ![]() |
| Rating: | 93 % |
| Solved: | 40 times |
| Observed: | 2 times |
| ID: | 000SOU |
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