Equally Mad (Dynamic FoW)

(Published on 13. August 2025, 11:40 by gdc)

This is puzzle is similar to We're All Mad Here, where I also mixed Dynamic Fog with Mad Fold-In. See below for an example image. Thanks to the CtC discord (and others) for testing. Hope you enjoy!

0-8 Sudoku: Place the digits 0-8 once each in every row, column and box.
Dynamic Fog hides some clues. Placing a correct digit lifts fog from its cell and sometimes other cells.
Equal Split Lines: Dots split lines into segments with equal sums. Digits may repeat on lines but not within segments. Lines only move orthogonally between centers of cells and don't branch or overlap.
Mad Fold-In: If the cells between the dashed columns are removed, all clues fold into valid clues in the resulting 4x9 grid.

Rules

Click on the image to play!

Example Image

The two lines (8=1+7, 7+3=6+4=3+2+5) get folded into a single line (8=1+2+5). The repeated 3 on the long line is allowed because they are on different segments.

Where Do I Find More Fold-In Puzzles?

You can use this search to find more fold-in puzzles by gnubeutel (the inventor of the constraint), ThePedallingPianist, ViKingPrime, ChinStrap and others!

Solution code: Column 4 top to bottom (9 digits)

Solved by Ikke Moon, mellowrobinson, tuoni2, Gilliatt, SKORP17, TripleABattery, Gnubeutel, maniacaljackal, illegel, jalebc, aqjhs, someguy209, sarabtx, Sarhik, Sandica, zeniko, spookyripper, hieutc, ... bboom, vorash00, MPR, MaxSmartable, AAAAAAAAAAAAAAAAAAA, Dentones, widjo, x3y2z1, CHRosenthal, Scojo, palpot, karlmortenlunna, ViKingPrime, Kyriaas, jkuo7, BabyfacedBard, SZCrow, DragonEgg

Full list