Robuta

https://anuragthefirst.blogspot.com/2011/12/fillomino-connected-medium.html The diary of a puzzlemaker: fillomino (connected) Rules: All areas of prime size form a single connected group.Same with all composite-sized areas.Regular fillomino rules hold good. the diarypuzzlemakerfillominoconnected https://anuragthefirst.blogspot.com/2014/02/puzzle-284-fillomino-no-rectangles.html The diary of a puzzlemaker: Puzzle 284: Fillomino: No rectangles the diarypuzzlemakerfillominorectangles https://anuragthefirst.blogspot.com/2012/11/puzzle-206-touchy-fillomino.html The diary of a puzzlemaker: Puzzle 206: Touchy Fillomino This is a touchy fillomino . the diarypuzzlemakertouchyfillomino