Standard Fillomino Rules: Divide the grid along the dotted lines into regions called polyominoes so that no two polyominoes with the same area share an edge. Inside some cells are numbers; each number must represent the area of the polyomino it belongs to. A polyomino may contain zero, one, or more of the given numbers. (It is possible for a “hidden” polyomino — a polyomino without any of the given numbers — to contain a value that is not present in the starting grid such as a 6 in a puzzle with only 1-5 clues.)

Also, all polyominoes of same size besides 4 cannot touch. But all tetrominoes — polyominoes of size 4 — must be connected as in a LITS puzzle. All “4” clues have been replaced by letters indicating which tetromino type they belong to.

For automatic solution checking, either (A) all numbers/CAPITAL LETTERS (only in unclued cells) must be entered in green, blue, or red, or (B) all edges separating polyominoes must be drawn in green.

Fillomino (LITS) Grant Fikes

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