Isolated Pentomino Pair L-Shapes

Introduction

Here are the smallest known L-shaped polyominoes 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.

See also

  • L-Shapes from Two Pentominoes
  • Isolated Hexomino Pair Rectangles, at Andrew's Blog
  • Table of Results

     Isolated Pentomino
     FILNPTUVWXYZ
    F•1710—3—216——10—
    I61•21324458253—1266
    L62•229528769
    N—152•21268——9—
    P3222•2224622
    T——108—2•——————
    U2—3—2—•——62—
    V—22102——•——812
    W——3—1934——•—8—
    X—————————•——
    Y555102928911•5
    Z————2——2———•

    2 Tiles

    3 Tiles

    4 Tiles

    5 Tiles

    6 Tiles

    7 Tiles

    8 Tiles

    9 Tiles

    10 Tiles

    11 Tiles

    12 Tiles

    13 Tiles

    15 Tiles

    16 Tiles

    17 Tiles

    19 Tiles

    34 Tiles

    44 Tiles

    53 Tiles

    58 Tiles

    61 Tiles

    66 Tiles

    81 Tiles

    108 Tiles

    Last revised 2025-09-11.


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    Col. George Sicherman [ HOME | MAIL ]