Fillomino by Murat Can Tonta
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a number entry mode.)
Theme: Square Numbers
Author/Opus: This is the 35th puzzle from our contributing puzzlemaster Murat Can Tonta.
Rules: Standard Fillomino rules.
Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 2nd row, followed by a comma, followed by the 5th row.
Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:30, Expert = 7:00
Solution: PDF
Note: Follow this link for other classic Fillomino. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.