Pentomino Pair 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 full-symmetry oddities for the 66 pairs of pentominoes. Some were found by Helmut Postl.

See also Hexiamond Pair Oddities and Pentahex Pair Oddities.

Basic Solutions

 FILNPTUVWXYZ
F*1313179917179559
I13*59599995913
L135*9513913175913
N1799*9917171791717
P9559*51359555
T991395*21292151717
U1799171321*17255925
V179131752917*1751313
W9917179212517*5913
X555955555*55
Y5991751791395*5
Z913131751725131355*

5 Tiles

9 Tiles

13 Tiles

17 Tiles

21 Tiles

25 Tiles

29 Tiles

Holeless Solutions

Solutions shown above that are holeless are not shown here.

9 Tiles

13 Tiles

17 Tiles

21 Tiles

25 Tiles

29 Tiles

45 Tiles

Last revised 2019-12-20.


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