Signposts
(Published on 20. May 2026, 16:00 by Blobz)
Normal sudoku rules apply.
Shade cells using two colours such that each colour forms an orthogonally connected region, and no 2x2 area is a single colour.
A digit in a cell with arrows must match the total count of cells of the opposite colour in all given directions. For example, a 7 in a cell with arrows pointing east and south might be counting 4 cells to the south and 3 to the east. Every arrow points to at least one cell of the opposite colour.
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 5
Comments
yesterday, 19:52 by Baklin
I messed it up on the first try. But after 40 minutes on the second try I finally figured out what I should have seen a lot sooner.
Very glad I had not seen that it changed from 3 to 4 stars.
Often I will not try a 4 star. But this one was fun.
yesterday, 19:38 by pmays123
Very nice puzzle! thanks!
yesterday, 18:02 by madhupt
Very nice puzzle. The interplay never got too hard and resulted in a delightful solve. Thanks for sharing this.
yesterday, 16:28 by Franjo
Thank you very much for creating and sharing this clever constructed YY-hybrid.
yesterday, 10:09 by Big Tiger
There we go! Lots of fun, and not so hard that I was burned out at the end.
on 20. May 2026, 23:58 by nunc
Novel idea, beautifully executed. I loved it!
on 20. May 2026, 23:54 by dzamie
A very fun YY puzzle. I felt like there was some kind of tension on the left and right edges of the grid. Spicy...
on 20. May 2026, 19:28 by Big Tiger
And I broke it anyway. Will have to try again later, got a lunch meeting.
on 20. May 2026, 17:29 by Big Tiger
Is it counting cells of the opposite color that are "seen"? or literally all cells of the opposite color in that direction regardless of any toggling?
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"...the total count of cells of the opposite colour in all given directions"
~Blobz
Yes, I see that - that's the sentence for which I need clarification, not repetition.
** My hand was forced at one point, so it is every single cell of the opposite color, and its own color does not "block the view".
