Break the collossal board array into a constant
Break the collossal board array into a constant

this board array was being used twice, in exactly the same way as an
inline constant, this also made the tests a bit less pretty. I think
this is prettier.

Signed-off-by: Sam Phippen <e5a09176608998a68778e11d5021c871e8fae93c@googlemail.com>

ohthatjames/chess