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Monday, September 4, 2017
Eight queens puzzle
The
eight queens puzzle
is the problem of placing eight
chess
queens
on an 8×8 chessboard so that no two queens threaten each other. Thus, a solution requires that no two queens share the same row, column, or diagonal. The eight queens puzzle is an example of the more general
n
queens problem
of placing
n
non-attacking queens on an
n
×
n
chessboard, for which solutions exist for all natural numbers
n
with the exception of
n
=2 and
n
=3.
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