Note that a spider can only make up to 4 diagonal leaps on this board (and if I remember correctly in your other game featuring them, the board would also preclude making 8 or more leaps), so explicitly restricting it to 7 seems a bit unnecessary (a bit like saying a chess rook ‘may move up to 15 spaces orthogonally’ even though there's only space for half that); you could specify AA rather than A7 and get the same result with a cleaner textual description.
Note that a spider can only make up to 4 diagonal leaps on this board (and if I remember correctly in your other game featuring them, the board would also preclude making 8 or more leaps), so explicitly restricting it to 7 seems a bit unnecessary (a bit like saying a chess rook ‘may move up to 15 spaces orthogonally’ even though there's only space for half that); you could specify
AArather thanA7and get the same result with a cleaner textual description.