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Indicates that the challenge involves the manipulation of binary matrices, matrices whose elements are all one of two possible values, typically 1 and 0, or True and False.

A binary matrix is a matrix where all elements are one of two possible values, typically \$0\$ and \$1\$. Challenges with this tag typically ask about determining patterns in matrices, or about generating such matrices. All challenges with this tag should include a description of the values used in the matrix.

The tag is unnecessary for challenges tagged with , and often overlaps.