standardRookNumber -- Standard rook number of a collection of cells
Usage:
standardRookNumber Q
Inputs:
Q, a collection of cells
Outputs:
the standard rook number of Q
Description
The standard rook number is the maximum number of rooks that can be place on a collection of cells in (standard) non-attacking positions. Two rooks are in (standard) non-attacking position if they do not share the same row or column.