May 01, 2005
Optimal Queens
. 1 . . . . . 1 . . .
. . . 2 . . . . . . 1
. . . . . 3 . . 2 . .
3 . . . . . 1 . . . .
. . 2 . . . . . . 1 .
. . . . 1 .
Symmetric on Symmetric on
180-degree rotation 90-degree rotation
Figure 2: Examples of rotational symmetry in solutions.
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