peek at solution solve puzzle
quality: difficulty:
solvability: moderate lookahead
Puzzle Description Suppressed:Click below to view spoilers
#1: Eric (kelalatir) on Jul 26, 2022 [HINT]
Fun puzzle!#2: Belita (belita) on Jul 28, 2022
I solved all but the blue easily, but had to guess to finish the blue section.
I'm celebrating today! That's a day I can relate to!#3: derby (Derby) on Aug 2, 2022
The blue was difficult.#4: Philip (Philip) on Jan 26, 2023 [HINT]
I'm not sure if this is moderate or deep lookahead, but it's not very deep:#5: Web Paint-By-Number Robot (webpbn) on Mar 21, 2023
LL solves all but blue
EL on C17: C17R9 is white
LL
EL on R1: R1C27-28 is white
EL on R1 (looking at R2 and R3): if R1C21-22 is blue then R2C20-21 is blue, and the resulting white contradicts R3. So R1C21 is white. (possibly deep lookahead?)
EL on R1 (looking at R3): in all cases R3C27 is blue
LL
EL on R1: in all cases R2C24 is blue
LL to finish
Found to be solvable with moderate lookahead by wombatilim.#6: Wombat (wombatilim) on Mar 21, 2023 [HINT]
Regarding this step in Philip's Hint: "EL on R1 (looking at R2 and R3): if R1C21-22 is blue then R2C20-21 is blue, and the resulting white contradicts R3. So R1C21 is white. (possibly deep lookahead?)"
You can't quite call that EL but it's definitely logical. I think it's few enough steps to consider it moderate.
Show: Spoilers
You must register and log in to be able to participate in this discussion.