Do this outsides staring at clouds above: "Ancient Gods and Goddesses, I invoke thee. Waters from the sky, Let it be." "I command thee now, to thee all. Listen to my desire, Rain fall!" This spell has power over the weather and works w... Read more of To Make Rain Appear at White Magic.caInformational Site Network Informational
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BISHOPS IN CONVOCATION.





(Chessboard Problems)
[Illustration:
+---+---+---+---+---+---+---+---+
| B | B | B | B | B | B | B | B |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | B | B | B | B | B | B | |
+---+---+---+---+---+---+---+---+
]
The greatest number of bishops that can be placed at the same time on
the chessboard, without any bishop attacking another, is fourteen. I
show, in diagram, the simplest way of doing this. In fact, on a square
chequered board of any number of squares the greatest number of bishops
that can be placed without attack is always two less than twice the
number of squares on the side. It is an interesting puzzle to discover
in just how many different ways the fourteen bishops may be so placed
without mutual attack. I shall give an exceedingly simple rule for
determining the number of ways for a square chequered board of any
number of squares.


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Next: THE EIGHT QUEENS.

Previous: BISHOPS--GUARDED.



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