Here are two Sashigane Fillomino puzzles.
There are twenty-five two-clue unique-solution 6 by 6 Sashigane Fillomino puzzles. One more uses a four and an eight, five more use a six and a nine, and seventeen use a nine and a ten.
Here are two Sashigane Fillomino puzzles.
There are twenty-five two-clue unique-solution 6 by 6 Sashigane Fillomino puzzles. One more uses a four and an eight, five more use a six and a nine, and seventeen use a nine and a ten.
Here is one Loop Fillomino puzzle.
(The loop in this puzzle is not uniquely determined.)
[Solution on page 2]
Here is one Matryoshka Fillomino puzzle. The complete grid solves as a regular 10 by 10 Fillomino; peeling off the outer frame reveals a new 8 by 8 Fillomino; peeling off the outer frame of that yields yet another 6 by 6 Fillomino – and so on, all the way down to a 2 by 2 puzzle in the very center.