Puzzle Mechanics
Cell Shading
Shade selected cells so the resulting pattern satisfies all clues and constraints.
12 in catalog
Difficulty 5/10
Place the whole fleet so each row and column holds the number of ship cells shown; ships may not touch, even diagonally.
Difficulty 6/10
A room-shading puzzle: shade cells in bold rooms so each number matches its room’s shaded count. Shaded cells can’t touch side by side, white cells stay connected, and a straight line of white cells spans at most two rooms.
Difficulty 5/10
Shade some cells of a filled number grid so no number repeats in any row or column; shaded cells can’t touch, and unshaded cells must stay connected.
Difficulty 5/10
Shade cells so the column numbers of shaded cells in each row, and the row numbers in each column, add up to the given clues.
Difficulty 6/10
Shade cells so each number equals the white cells it can see in four directions, itself included; shaded cells can’t touch, and whites stay connected.
Difficulty 6/10
Shade an L, I, T or S shape of four cells in each room so all shaded cells connect, no 2×2 is shaded, and identical shapes never touch.
Difficulty 4/10
A picture logic puzzle: paint cells filled or blank so every row and column's contiguous blocks match the edge run-length clues—often revealing a hidden image.
Difficulty 6/10
A shading logic puzzle: form numbered white islands of exact size while painting one connected black wall with no 2×2 black pools.
Difficulty 6/10
Shade cells so each circle is a white "cape" with exactly one white neighbor, other white cells have at least two, whites stay connected, and no 2×2 is a single color.
Difficulty 6/10
Shade empty cells into one connected wall; clues give the lengths of the shaded runs in the eight surrounding cells, and no 2×2 block may be shaded.
Difficulty 6/10
Shade cells as the arrow clues indicate, never side by side, then draw one loop through all remaining empty cells.
Difficulty 5/10
Fill every cell with a black or white circle so each color forms one connected group and no 2×2 block is all one color.