This puzzle was originally made for one of Scojo's puzzle prompts, where we had to incorporate both Arrows and 10-Lines into a puzzle
Sudoku: Place the digits 1-9 once each in every row, column, and box.
Yin yang: Shade some cells so that all unshaded cells are orthogonally connected, all shaded cells are orthogonally connected, and every 2x2 region has at least one shaded cell and at least one unshaded cell
Lines: Some lines cross over borders between shaded and unshaded cells. These borders divide the line into segments. Each line segment (or full line which stays entirely within one shading) follows one of two rules:
-Shaded line segments are "arrows" (a digit on one end of the line segment contains the sum of the other digits along the line segment
-Unshaded line segments are "10-lines" (the line segment can be further divided into sub segments where each sub segment contains digits that sum to 10).
(For the sake of clarity, note that one cell segments are not allowed.)
Kropki dots: Digits separated by a white dot are consecutive. Digits separated by a black dot are in a 1:2 ratio
Solution code: Column 6, with a / to indicate a change in shading. (i.e 12/3456/7/89)
on 29. December 2025, 14:51 by Snookerfan
Awesome, pretty hard because of all the options and very enjoyable. Thanks!