Isolated Pentomino Pair Rectangles

Introduction

Here are the smallest known rectangles that can be formed by any pair of pentominoes, using at least one of each, and isolating the copies of one. I use Andrew Bayly's definition of isolation: the isolated copies may not touch even at corners.

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

Andrew Bayly found some new and improved solutions.

See also

  • Isolated Hexomino Pair Rectangles, at Andrew's Blog

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    77 Tiles

    252 Tiles

    Last revised 2025-07-24.

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    Col. George Sicherman [ HOME | MAIL ]