Saturday, February 27, 2021

Puzzle #319 - Castle Plumbing (Castle Wall + Pipelink)

It's time for another logic showcase puzzle- this time the requirement was to make a single puzzle that combined two different puzzles into one grid, with defined areas for each genre. My immediate thought was to combine Pipelink with another loop genre to enable some configurations that would normally be impossible in that genre, and settled on Castle Wall to allow for a bit more interaction between sections. Full rules for this puzzle are in the penpa link, and a short summary follows.

The gray cells are Pipelink and must all be used. Some cells are fully filled in for you, and the loop may freely cross on these cells. The rest of the grid is Castle Wall. Black walls must be outside of the loop and white walls must be inside of the loop. Numbered clues give the total lengths of loop segments in that direction.

penpa interface

For the automatic answer check to work, the loop must be drawn with the "normal" mode, except for the half segments coming off of the given segments which must be with "middle". Hopefully in the future, all middle will work.

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