Is it possible that the move to d5 is missing here?
That move is illegal in Reroute66, for it cannot be reached by any combination of a lateral move and a diagonal move. Unlike Chess66, A4 and b4 are not laterally adjacent in Reroute66. They do share a corner, though. So, I'm wondering whether I should tweak my definition of diagonal to not count them as diagonally adjacent, or if I should say they are diagonally adjacent though they aren't part of a longer series of spaces diagonally connected in the same direction. If I go with the latter, the Knight could also move to c4, and a Bishop on A4 could also move to b4, though it couldn't go any further, because none of the diagonal directions on d4 would be in the same direction.
That move is illegal in Reroute66, for it cannot be reached by any combination of a lateral move and a diagonal move. Unlike Chess66, A4 and b4 are not laterally adjacent in Reroute66. They do share a corner, though. So, I'm wondering whether I should tweak my definition of diagonal to not count them as diagonally adjacent, or if I should say they are diagonally adjacent though they aren't part of a longer series of spaces diagonally connected in the same direction. If I go with the latter, the Knight could also move to c4, and a Bishop on A4 could also move to b4, though it couldn't go any further, because none of the diagonal directions on d4 would be in the same direction.