Boundary Conditions
(Published today, 07:53 by balpha)
Normal Sudoku rules apply.
Draw a path that only moves orthogonally, doesn't branch, doesn't intersect, overlap, or touch itself orthogonally, and whose two ends are the cells with the stars.
Region sum line: 3x3 box borders divide the path into segments. All segments have the same sum.
Yin Yang: The path cells and the non-path cells each form an orthogonally connected region, and every 2x2 area contains cells from both regions.
Kropki dots:
If two digits are separated by a black dot, one is double the other, and they are in different regions.
If two digits are separated by a white dot, they are consecutive, and they are in different regions.
Solution code: Row 3
Comments
today, 21:52 by dzamie
That was rather pleasant. Forcing the YY to not fork wound up introducing a couple uncommon bits of logic.
today, 18:14 by Snookerfan
Very pleasant and approachable puzzle, probably 1 to 2 stars with a little challenge near the end. Thanks!
[balpha:] Thank you! Yes, consensus seems to be 2*.
today, 09:33 by Reisen
The construction is very nice! One knows the basic restriction of Yin Yang can just find how to solve it easily :)
[balpha:] Thank you! Indeed, the Yin Yang is the easier part.
