THE SIX PAWNS.





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.





THE SIX FROGS. THE SIXTEEN SHEEP. facebooktwittergoogle_plusredditpinterestlinkedinmail

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