Norinori

From WPC unofficial wiki

Rules[edit]

Shade two cells in each thickly outlined region, so that each shaded cell shares an edge with exactly one other shaded cell.

(Rules and example from WPC 2017/Round 13)

History of the puzzle[edit]

First appeared on Nikoli vol 124 (2008). Invented by 湾狼子. The name refers to nori, seaweed used in Japanese cuisine.

Appearances in the past WPCs[edit]