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March Mutant 22: Cross the Streams

Shade in some cells black such that the black cells are all connected to each other through their edges, and no 2x2 cell area within the grid contains all black cells. Numbers to the left of a row or above a column represent the groups of consecutive black cells which are in that row or column. For example, a clue of "3" means the row or column has three consecutive black cells, and a clue of "3 1" means that the row or column has a group of three consecutive black cells followed by a single black cell, separated by at least one white cell. A question mark (?) represents a group of consecutive black cells whose size is unknown; an asterisk (*) represents any number of unknown groups of black cells, including none at all.
Sorry about the lack of any sort of mutation at all in this puzzle. I promise that tomorrow's puzzle will be completely different.


ralphmerridew said...

Predicition: Tomorrow's puzzle will have the exact same grid, but different conditions.

Anonymous said...

^^ Thats just raised the bar now hasn't it? :P This one was nice fun anyway, I seem to be developing tunnel vision, missed the top row and spent a long time staring.

Grant Fikes said...

ralphmerridew: That's a good idea! Unfortunately, this is Quantity Not Quality Month, so I'm not allowed to use good ideas.

Anonymous said...

Quantity Not Quality-- of surprises, perhaps? I saw the "completely different" promise being broken from a hundred yards off. But with that, I have just solved it as two quality puzzles.

Anonymous said...

^ Now that you mention it... My tunnel vision comment just got a bit more meaning.

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