Parity

Parity is a term used in coloring. It represents the state of a candidate in a cluster.

Within a color cluster, there can only be 2 parities. Each candidate within the cluster is assigned to one of these parities. The 2 parities are each other's opposite.

For each pair of candidates within the cluster, there are two possible situations:

• Parities are the same

These candidates are equivalent. They must be true or false together.

• Parities are opposite

Only one of these candidates will be true. The other must be false.