The images of the black Left and Right do not seem to fit their move well. Where the white Left and Right have Rook images that are rotated in the direction of the sliding move, the black images are rotated away from it. I think it would be better to swap the images. This makes the initial setup look strange, but the initial setup is actually strange, also w.r.t. the moves of Left and Right. Which for white are towards the board edge, but for black are towards the center. This is suspected to be an error, but only the author of this variant will be able to tell what he meant.
The images of the black Left and Right do not seem to fit their move well. Where the white Left and Right have Rook images that are rotated in the direction of the sliding move, the black images are rotated away from it. I think it would be better to swap the images. This makes the initial setup look strange, but the initial setup is actually strange, also w.r.t. the moves of Left and Right. Which for white are towards the board edge, but for black are towards the center. This is suspected to be an error, but only the author of this variant will be able to tell what he meant.