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## THE SIX PAWNS.

(

The Guarded Chessboard)

In how many different ways may I place six pawns on the chessboard so

that there shall be an even number of unoccupied squares in every row

and every column? We are not here considering the diagonals at all, and

every different six squares occupied makes a different solution, so we

have not to exclude reversals or reflections.

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