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Comments on Puzzle #33215: A True Union
By sanane samanye (maceraseven)

peek at solution       solve puzzle
  quality:   difficulty:   solvability: moderate lookahead  

Puzzle Description Suppressed:Click below to view spoilers

#1: Wombat (wombatilim) on Mar 12, 2024 [HINT]

Initial line & color logic solves 88% with only red remaining.

C1: If R3 is red, R1 is invalid. LL.

The same step can be rotated around for each corner: R20C3, R10C20, and R1C18 each need to be white to avoid a contradiction.

LL to finish.
#2: Web Paint-By-Number Robot (webpbn) on Mar 12, 2024
Found to be solvable with moderate lookahead by wombatilim.

Show: Spoilers

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