Knights' Tours - Long & Short (Posted on 2009-05-05)
On a 4 x 4 board what is the longest and the shortest 'tour' that a knight may make subject to no valid next destination being available, and not being able to revisit a prior square.
The knight starts in the top left cell (A).
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Dismissing mirrored tours (A-P being the mirror) how many such routes are there?
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