Aquapelago
Aquapelago is a shading and connectivity puzzle created by Walker Anderson in 2023. In this genre, certain cells must be shaded to form regions that follow the rare rule of diagonal connectivity—shaded cells connect to each other only via their diagonals, never orthogonally. This unusual constraint produces distinctive logical patterns and forces solvers to reason about shapes and adjacency in ways that differ sharply from traditional shading puzzles.
Rules
Shade some cells so that no two shaded cells are adjacent and the unshaded cells form one orthogonally connected group. No 2×2 group of cells may be entirely unshaded. Some cells are already shaded, and the numbers in those cells indicate the number of shaded cells in the same diagonally connected group as the cell, including the cell itself.
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