Comments on Puzzle #24015: What is this?
By RB (rb2013)
peek at solution solve puzzle
quality: 
difficulty: 
solvability: moderate lookahead
peek at solution solve puzzle
quality: difficulty: solvability: moderate lookahead
Puzzle Description:
#1: Web Paint-By-Number Robot (webpbn) on Mar 15, 2014
Found to be solvable with moderate lookahead by infrapinklizzard.#2: Joe (infrapinklizzard) on Mar 15, 2014 [HINT]
This can be done with summing.#3: Brian Bellis (mootpoint) on Mar 15, 2014 [HINT]
Note that the 1,1s in r1-3. Each left 1 must be in c1-2 and each right 1 must be in c3-4.
So that puts 3pixels in c1-2, and three pixels in c3-4.
Now sum c1-2. That equals four. So one and only one pixel of the 2 in r4 can go in c1-2. That means that r4c2 is black and r4c1is white.
Then LL to finish.
Edge logic for the 2 in the bottom row dots c1r4.#4: Jota (jota) on Mar 15, 2014
Then LL to finish.
It doesn't look like anything to me.
Nothing.#5: Aldege Cholette (aldege) on Mar 15, 2014
It looks like a father holding his baby up in the air.:)#6: Rebecca Cary (rec3) on Mar 15, 2014
I have no idea. But two puzzles in a row that are 4x4 and logically but not trivially solvable is quite a feat.#7: Tom O'Connell (sensei69) on Mar 16, 2014
Buddhist monk praying#8: Niki Cholette (Niki420) on Mar 16, 2014
squirrel?#9: Ron Jacobson (shmily999) on Mar 18, 2014
Panda taking a bow.#10: Bruce Yanoshek (yanogator) on Feb 20, 2019
I solved it like Brian, so no lookahead.#11: Kristen Vognild (kristen) on Feb 20, 2019
Edge logic counts as lookahead, because you have to take more than one row/column into consideration. :)#12: Allie Blake (Allie) on Nov 10, 2020
boat#13: Andrew Schultz (blurglecruncheon) on Jul 28, 2021 [HINT]
I can't see an image either, but it's a neat solve for the two non-line logic ways to solve it. Joe's summing idea is slick--I considered it but resorted on good old reliable edge logic.
You must register and log in to be able to participate in this discussion.