# Pentomino

Revision as of 03:39, 5 August 2009 by *>NightmareciBot (Robot: Converting to new playfield syntax...)

A **pentomino** is a polyomino of five squares.

The ancient pentomino puzzle uses free pentominoes.

## The shapes

There are 12 free pentominoes. Six of them are chiral, making a total of 18 one-sided pentominoes.

### Symmetric

I |
T |
U | |||

V |
W |
X |

### Chiral

These come in mirrored pairs:

R and F |
S and Z |
J and L | |||

Y' and Y |
H and N |
P and Q |