Not sure what it is, but it's from Microsoft and Picross came to mind...
I'm wondering if we're allowed to discuss puzzles in a gaming forum?
Update:
It's not Picross!
UPDATE 2:
It appears that some of the data have been corrupted due to age. Fortunately, the corruption seems to be systematic—we detect exactly one extraneous number in every horizontal and vertical clue.
UPDATE 3:
Someone mentioned this might be a colorized nonogram, not Picross.
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