# 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 9.
If you find a smaller solution or solve an unsolved case,
please write.

See also Uniform Polyiamond Stacks.

### Impossible

### Hybrid Solutions

### Impossible

### Hybrid Solutions

Last revised 2023-06-28.

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George Sicherman
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