Significados de ordinary chessboard en inglés

We cannot divide the ordinary chessboard into four equal square compartments, and describe a complete tour, or even path, in each compartment.

Place as few bishops as possible on an ordinary chessboard so that every square of the board shall be either occupied or attacked.

This equality, of course, is in consequence of the fact that the number of squares on an ordinary chessboard, sixty-four, is an even number.

I have not attempted the task of enumerating the ways of dividing a board 8x8-thatis, an ordinary chessboard.

On an ordinary chessboard, 8 by 8, every square can be guarded-thatis, either occupied or attacked-by5 queens, the fewest possible.