\begin{definition}[Definition:Chess/Chessboard]
A '''chessboard''' is an array (usually square) of alternating dark and light squares (conventionally referred to as '''black''' and '''white''', even though they may well not be those actual colours).
{{ChessDiagram|
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This may be referred to as an $m \times n$ '''chessboard''', where:
:$m$ is the number of ranks
:$n$ is the number of files.
For the conventional '''chessboard''', as depicted above, $m = n = 8$.
\end{definition}