Pentomino Pair Dual Orthogonal Oddities

Introduction

A polyomino oddity is a symmetrical figure formed by an odd number of copies of a polyomino. Symmetrical figures can also be formed with copies of two different pentominoes. Here are the smallest known dual-orthogonal oddities for the 66 pairs of pentominoes.

See also

  • Pentomino Pair Dual Diagonal Oddities
  • Pentomino Pair 4-Rotary Oddities
  • Pentomino Pair Full Oddities
  • Hexiamond Pair Oddities
  • Pentahex Pair Oddities
  • Carl Schwenke and Johann Schwenke contributed improvements.

    Basic Solutions

     FILNPTUVWXYZ
    F*57573377553
    I5*3533355355
    L73*7335711573
    N557*55797575
    P7335*3539533
    T33353*7135357
    U335757*59357
    V75793135*15593
    W7511795915*597
    X535553355*55
    Y5577355995*5
    Z35353773755*

    3 Tiles

    5 Tiles

    7 Tiles

    9 Tiles

    11 Tiles

    13 Tiles

    15 Tiles

    Holeless Variants

    Solutions shown above that are holeless are not shown here.

    5 Tiles

    7 Tiles

    9 Tiles

    11 Tiles

    13 Tiles

    35 Tiles

    Last revised 2025-05-25.


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    Polyform Oddities < Polyform Curiosities
    Col. George Sicherman [ HOME | MAIL ]