Sum-Product Snake
(Published on 22. July 2021, 08:23 by kolot)
RULES: Normal sudoku rules apply. The grey cells are the head and tail of a one cell wide snake that does not touch itself orthogonally, but may touch diagonally. The cells with a circle or diamond are not snake cells, but are (orthogonally or diagonally) adjacent to at least one snake cell. Circles show the sum, diamonds show the product of the snake cells (orthogonally or diagonally) surrounding them.
Have fun!
Solution code: Row 8 followed by column 5.
Comments
on 6. July 2023, 02:54 by damasosos92
Very nice puzzle! Those diamonds are a lot powerful. Thank you kolot.
on 12. August 2022, 18:43 by FmrSudokuPhilosopher
No numbers but nice philosophy of sudoku
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Thank you!
on 10. August 2022, 10:55 by Playmaker6174
Wow! Absolutely wonderful construction, lots of intriguing deductions for such a scarce setting, a very lovely treat for a person not so familiar with snek logic like me :D
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Thank you for solving this old puzzle and for your kind comment!
on 10. July 2022, 07:47 by Phistomefel
Wonderful logic in there and I found it very impressive that you managed to pull this one off without a single given digit. Hats off, kolot!
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Thank you so much for solving this old puzzle and for your lovely comment!
on 7. July 2022, 11:32 by lerroyy
Great puzzle!
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Thank you!
on 9. June 2022, 10:29 by filuta
yeah, really fun puzzle with some great logic, thanks!
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Thank you so much! Happy to see that it was fun.
on 9. June 2022, 01:13 by Piatato
Fun puzzle! Snake rulesets always bring some weird and wonderful logic. :-)
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Thank you so much for solving it! It is good to see that you had fun with it. :-)
on 8. June 2022, 14:19 by kolot
Increased difficulty from 3 stars to 4 stars.
on 8. June 2022, 12:11 by Niverio
It's a miracle that this actually has a unique solution. Every deduction feels undoable until it makes sense.
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Thank you so much for the solve and for this lovely comment!
on 28. April 2022, 14:06 by kolot
Minor change in the text.
on 28. April 2022, 14:03 by kolot
CTC app link is added.
on 3. April 2022, 01:19 by Nordy
Loved this! Box 5 was full of nice surprises. This puzzle has inspired me to finish a puzzle with a related rule set that I had set aside.
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Thank you for solving. This puzzle has been forgotten here for a long time. I am looking forward your puzzle with a related rule set.
on 10. August 2021, 19:32 by kolot
Labels changed.
