Pentomino Pairs Tiling a Rectangle with Three Corner Cells
Removed
A pentomino is a figure made of five squares joined
edge to edge.
There are 12 such figures, not distinguishing reflections and rotations.
They were first enumerated and studied by Solomon Golomb.
The problem of arranging copies of a polyomino to form a rectangle
has been studied for a long time.
Here I study the problem of arranging copies of two pentominoes
to form a rectangle with three corner cells removed.
See also
I use Solomon W. Golomb's original names for the pentominoes:
This table shows the smallest total number of copies
of two pentominoes known to be
able to tile a rectangle with three of its corner cells removed,
using at least one of each pentomino.
| F | I | L | N | P | T | U | V | W | X | Y | Z |
|---|
| F
| *
| 17
| 9
| 3
| 3
| ×
| 3
| 21
| 3
| ×
| 12
| ×
|
|---|
| I
| 17
| *
| 9
| 12
| 3
| 41
| 45
| 19
| 33
| ×
| 17
| ×
|
|---|
| L
| 9
| 9
| *
| 5
| 5
| 12
| 12
| 9
| 9
| 17
| 3
| 12
|
|---|
| N
| 3
| 12
| 5
| *
| 3
| 12
| 15
| 9
| 9
| ×
| 5
| 21
|
|---|
| P
| 3
| 3
| 5
| 3
| *
| 5
| 5
| 3
| 5
| 9
| 3
| 9
|
|---|
| T
| ×
| 41
| 12
| 12
| 5
| *
| 57
| ×
| 9
| ×
| 28
| ×
|
|---|
| U
| 3
| 45
| 12
| 15
| 5
| 57
| *
| 54
| 5
| ×
| 5
| ×
|
|---|
| V
| 21
| 19
| 9
| 9
| 3
| ×
| 54
| *
| 5
| ×
| 15
| 17
|
|---|
| W
| 3
| 33
| 9
| 9
| 5
| 9
| 5
| 5
| *
| ×
| 5
| ×
|
|---|
| X
| ×
| ×
| 17
| ×
| 9
| ×
| ×
| ×
| ×
| *
| 33
| ×
|
|---|
| Y
| 12
| 17
| 3
| 5
| 3
| 28
| 5
| 15
| 5
| 33
| *
| 17
|
|---|
| Z
| ×
| ×
| 12
| 21
| 9
| ×
| ×
| 17
| ×
| ×
| 17
| *
|
|---|
So far as I know, these solutions
have minimal area. They are not necessarily uniquely minimal.
3 Tiles
5 Tiles
9 Tiles
12 Tiles
15 Tiles
17 Tiles
19 Tiles
21 Tiles
28 Tiles
33 Tiles
41 Tiles
54 Tiles
57 Tiles
Last revised 2023-06-16.
Back to Polyomino and Polyking Tiling
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Polyform Curiosities
Col. George Sicherman
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