"An examination of the methods employed by these 'witches,' as shown by
their confessions, give us a key to the mystery. These 'witches' would
fix their minds upon other people, or their animals, and by holding a
concentrated mental picture the... Read more of The Secret Of Witchcraft at Occultism.ca
(Chessboard Problems)
It will be seen that every square of the board is either occupied or
attacked. The puzzle is to substitute a bishop for the rook on the same
square, and then place the four queens on other squares so that every
square shall again be either occupied or attacked.