Isofill: Divide the grid into 10 regions, each with 10 orthogonally connected cells. Every cell in a region should contain the same digit. All of the digits 0-9 must appear in the grid.
Path: Draw a light blue path from the red circle to the blue circle. The path moves only orthogonally from cell to cell.
The path must visit N cells in every region in numerical order, where N is the region's digit. The circles do not count towards this rule, so the path's digits are:
RedCircle(0)1223334444...999999999BlueCircle(9)
Little Killers: Red clues outside the grid are the sum of the digits along the indicated diagonal. Digits may repeat if allowed by the other rules.
Numbered Rooms: A blue clue outside the grid indicates the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction.
Kropki pairs: Digits in cells separated by a black dot are in a 2:1 ratio. Digits in cells separated by a white dot are consecutive. Not all dots are necessarily given.
The path cannot cross any dots or the two light blue XXXX walls found in the grid. The walls only block the path; they have no effect on the regions.
Lösungscode: Row 8, left to right
am 23. August 2026, 21:10 Uhr von mscha
Very nice! A lot trickier than I expected; a high three stars for me.
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Thank you. I agree and initially published this as a 3* puzzle but it seems most people think it's a little easier.
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am 18. August 2026, 11:45 Uhr von Asparagus
Thank you for a very nice puzzle!
I guessed the incomplete Numbered Rooms rule before starting and was correct! Maybe you need to fix that on this page.
Lovely mix of different clue types.
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The rules are fixed now, thanks for pointing it out. I'm glad you enjoyed the puzzle, thanks for playing it.
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am 15. August 2026, 11:06 Uhr von Astr0creep
A bit of a daunting looking ruleset, but a very approachable puzzle once you get into it. Really fun!
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It's always hard to write down rules that make sense in your head in an understandable and easy way for the solver :( Happy you still tried the puzzle and Had fun with it :)
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am 14. August 2026, 23:00 Uhr von yuripuppies
I loved this isofill puzzle! Easier than the others I've done, for sure, I'd call it 2*. I loved the path constraint, it made the solve flow in a very satisfying way
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Thanks for playing it and your nice comments. We're glad you enjoyed it.
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am 9. August 2026, 21:18 Uhr von sujoyku
Thank you for this fun puzzle, PrissyP and Lina!
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Thank you for solving it, I'm happy you had fun :)
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