I think the gold and silver descriptions are too ambiguous, since 'forward' and 'straight ahead' could be read as referring to both the orthogonal and diagonal moves. It would be clearer to switch the order of those parts of the descriptions.
Gold: steps one square diagonally forward or orthogonally
Silver: steps one square straight ahead or diagonally
I think the gold and silver descriptions are too ambiguous, since 'forward' and 'straight ahead' could be read as referring to both the orthogonal and diagonal moves. It would be clearer to switch the order of those parts of the descriptions.
Gold: steps one square diagonally forward or orthogonally
Silver: steps one square straight ahead or diagonally