Sunday Stumper: Aqre by Murat Can Tonta

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Since 2021, we have posted some extra difficult Sunday Stumpers, about once a month. These will be quite tough puzzles, but with a logical path to be found (and solution videos to help). This second Sunday Stumper of 2022 is a large Aqre puzzle by Murat Can Tonta.

Aqre by Murat Can Tonta

(view directly for a larger image)

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Squares

Author/Opus: This is the 219th puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Standard Aqre rules: Shade some cells so that all shaded cells form one connected group. Regions with numbers must contain the indicated count of shaded cells, and it is allowed to shade over the numbered cells. There may not exist a run of four or more consecutive shaded or unshaded cells horizontally or vertically anywhere in the grid.

Aqre Example by Serkan Yürekli

Difficulty: 5 stars

Time Standards (highlight to view): Grandmaster = 21:00, Master = 35:00, Expert = 1:10:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for more Aqre puzzles. If you are new to this puzzle type, here are our easiest Aqre to get started on. More Aqre puzzles are in Shading Variety Collection by Prasanna Seshadri.

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