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Monday Mutant 53: 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.

4 comments

Jonah said...

That was awesome. Probably your best puzzle of this form.

Scott said...

Fun stuff. Lots of variety in the kinds of logic needed to solve.

Projectyl said...

Me, attempting to explain Cross the Streams to my girlfriend: "It's Paint By Numbers, but with wildcards."
Her: "Huh."
Me: "And the black squares follow Nurikabe rules."
Her: "Heh!"
Me: "And it doesn't make a picture."
Her: "What? No. No, I was with you up to that."
Me: "So I guess it's just 'by Numbers'."
Her: "No, it's not even always that. It's just... 'by'."

Grant Fikes said...

Projectyl: If you're not careful, you'll be solving these puzzles in the great by and by.

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