peek at solution solve puzzle
quality:
difficulty:
solvability: moderate lookahead
Puzzle Description Suppressed:Click below to view spoilers
#1: Belita (belita) on Sep 14, 2026
Too bad we don't have the color orange in our palette.#2: Valerie Mates (valerie) on Sep 14, 2026 [HINT]
Comment Suppressed:Click below to view hints#3: Kristen Vognild (kristen) on Sep 14, 2026 [HINT]
Comment Suppressed:Click below to view hints#4: Jota (jota) on Sep 15, 2026
I agree#5: Web Paint-By-Number Robot (webpbn) on Sep 15, 2026
Found to be solvable with moderate lookahead by wombatilim.#6: Wombat (wombatilim) on Sep 15, 2026 [HINT]
Comment Suppressed:Click below to view hints#7: Brian Bellis (mootpoint) on Sep 15, 2026
Valerie. What do you think of the idea that if you can visualize the contradiction without physically doing it (placing a pixel in the wrong spot and seeing that it leads to a contradiction) than it ought to be moderate lookahead?#8: Joanne Firla (JoFirla) on Sep 15, 2026
The C17 R10,11 "mistake" is easy to carry through in you head a few steps to visualize the contradiction. My vote is for moderate (but definitely not guessing)
Zzzzzzzzzz#9: Valerie Mates (valerie) on Sep 16, 2026
Brian - I am still learning the differences between guessing, moderate lookahead, and deep lookahead, so I am not sure that I am the best person to answer your question. But it seems to me that logic should be explainable, which would mean that visualizing the answer wouldn't count, but that it can probably be put into words?#10: Wombat (wombatilim) on Sep 16, 2026
Joe (@infrapinklizzard) - If you happen to see this puzzle, I think you are the best person to answer Brian's question.
Anybody else reading this - If you have thoughts on the topic, you are welcome to chime in too!
If you can visualize the result without placing a mark, it's not guessing. My understanding of moderate v. deep lookahead is how many steps ahead you go: Moderate is limited to 2-3 moves ahead, and more than that counts as deep. Sometimes I'll have a step where I can't determine whether it was 3 moves or 4, but that's fairly uncommon.#11: David Bouldin (dbouldin) on Sep 16, 2026
Shh...let 'em sleep. he does less damage that way. true now, true then. i don't like either of them!#12: Valerie Mates (valerie) on Sep 17, 2026
Thanks Wombat!#13: Carol Brand (KarylAnn) on Sep 18, 2026 [SPOILER]
Comment Suppressed:Click below to view spoilers#14: Joe (infrapinklizzard) on Sep 19, 2026 [HINT]
Comment Suppressed:Click below to view hints#15: Joe (infrapinklizzard) on Sep 19, 2026
I agree with Wombat.
2-3 steps is moderate
more than that is deep lookahead, if it is laid out
If it cannot be explained, then it is guessing
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