Uniform Polyomino Stacks

A uniform polyomino stack is a figure formed by joining copies of a polyomino, having the same contiguous length of cells in every row. Such a figure is compatible with every linear polyomino. It is equivalent to a tiling of a cylinder, but not every cylindrical tiling defines a uniform stack.

Here are minimal known uniform stacks for polyominoes of orders 1 through 8. If you find a smaller solution or solve an unsolved case, please write.