peek at solution solve puzzle
quality: difficulty:
solvability: deep lookahead
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#1: Jota (jota) on Apr 5, 2014
Except for the last 2 birds on the top left corner and the green butterfly, it's color and line solvable!#2: Heather M (AuntieH) on Apr 6, 2014
Cute series Ann.#3: Susan Duncan (medic25733) on Apr 7, 2014
Good series Ann. I enjoyed it#4: Joe (infrapinklizzard) on Apr 8, 2014 [HINT]
The butterfly solves with a smile.#5: Web Paint-By-Number Robot (webpbn) on Apr 8, 2014
The two birds make me frown a bit.
Hmm,
Picture logic makes it obvious that it's two v's, but It is difficult to find a non-deep lookahead with pure logic.
The best I can do is this:
a) Try to place the right 3 in r1 into the right clump of unknown. This can only go in c13-15 or c15-17. (C14-16 gives an immediate conflict in r2.) We will try c15-17 first.
b) This will leave a 2x2 rectangle in the right unknown clump. c13-14:r3-4 is the only unknown left in that clump now.
c) summing the clues in c13-14 gives us three more pixels to set.
d) the 3 in r3 cannot fit in that clump anymore, leaving only the 1 in r4.
= Since we need three pixels in c13-14 and can only set one, the original assumption must be wrong and the 3 in r1 cannot be in c15-17, making r1c17 white.
Then simple edge logic on the 3 in r1 will eliminate c16.
Which will then get us to a line logic finish.
So unless I'm missing something, this is deep lookahead.
Found to be solvable with deep lookahead by infrapinklizzard.#6: merkey (merkey88) on Apr 23, 2014 [HINT] [SPOILER]
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