From the Foxger’s Den #73: Fillomino (LITS)
(view image directly for a larger form)
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing, a number entry mode, and shading for this variation.)
Theme: Symmetry and Logic
Rules: Variation of standard Fillomino rules. All polyominoes of same size besides 4 cannot touch. But all tetrominoes must be connected to form a valid LITS solution. All 4 clues have been replaced by tetromino letters.
Answer String: For each cell in the marked rows, enter the area of the polyomino it belongs to. For the tetrominoes, instead of numbers use capital letters (L, I, T, S) in the appropriate cells. Start with the 10th column, followed by a comma, followed by the 14th column.
Time Standards (highlight to view): Grandmaster = 12:30, Master = 18:00, Expert = 36:00
Solution: PDF
Note: Follow this link for other classic Fillomino and this link for more variations on Fillomino puzzles. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.
That was a lot of fun to solve. Filled with clever little moments where an apparent ambiguity is resolved by the LITS rule.
13:37 leet whoo
Great puzzle, with connectivity logic mainly driving the solution. The top-right was a tough one there.
Wow that was fun !
Why didn’t I think of that variation !
We’ve posted another one earlier, in case you missed it: From The Foxger’s Den #37. And Grant’s posted several on his old blog as Monday Mutants, specifically these: MM 120, MM 119.