Comments on Puzzle #38522: It's a Gas! (gas gas)
By N. Franklin (kaytris)
peek at solution solve puzzle
quality: 
difficulty: 
solvability: moderate lookahead?
peek at solution solve puzzle
quality: difficulty: solvability: moderate lookahead?
Puzzle Description:
#1: Belita (belita) on Apr 23, 2024 [SPOILER]
Jumping Jack Flash - cute!#2: Bill Eisenmann (Bullet) on Apr 24, 2024
Well done!#3: Kristen Vognild (kristen) on Apr 24, 2024 [SPOILER]
That makes more sense than a ghost about to be sucked into a Ghostbusters trap! (A ghost is, technically, a gas?)#4: N. Franklin (kaytris) on Apr 24, 2024 [SPOILER]
Has anyone successfully web-pbn'd a lightning bolt into a puzzle? I was trying for an hour to draw a recognizable bolt with no success, and settled on the camera..#5: Valerie Mates (valerie) on Apr 25, 2024 [HINT]
I think this is in a fuzzy area between "moderate lookahead" and "guessing," so I didn't mark the puzzle's solvability.#6: Philip (Philip) on May 2, 2024 [HINT]
Here is what I did:
The first 96% is line and color logic.
Then, if row 19 column 10 is a square, a few steps forward there is a contradiction. Ditto for row 19 column 13. So both of those are dots.
Ditto for row 18, columns 10 and 13.
Then line logic to finish.
I used Summing to solve it:
Area R15-19 x C6-10, by column clues, has exactly 9 black remaining. The row clues, other than the 4, are all 2s that would be wholly in or out of the area, so cannot sum to 9. So the 4 in R15 must have an odd number in the area. So R15C9 is white and R15C10 is black.
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