Normal fillomino rules apply: divide the grid into orthogonally-connected regions such that regions of the same size don't share an edge. Each cell within a region contains a number equal to its size.
Thermometer: there is a single invisible thermometer that travels along a path of orthogonally-adjacent cells without branching. Along the thermometer, numbers in cells are strictly increasing (that is, each number is greater than *and not equal* to the last). Cells with a small square are visited by the thermometer; the other cells in the thermometer, as well as the direction in which the thermometer increases, must be deduced by the solver.
Solution code: Row 2 followed by row 3 followed by row 4
on 24. March 2024, 21:20 by Christounet
Fun and clever puzzle :)
on 8. August 2023, 10:21 by GabeSzeto
Very nice break in and smooth logic
on 31. July 2023, 23:39 by Myxo
Great little puzzle, loved it!
on 29. July 2023, 08:01 by dennischen
Clever little puzzle :)
on 29. July 2023, 04:07 by zzw
Updated links to enable answer check