Rotation of a two-square piece could be written as a pasW move on the master and dummy that is restricted by the captureMatrix to hop over its own master or dummy.
Ah, OK! (Or pabsW to switch from orthogonal to diagonal, as with the Great Wall; then pasF to rotate and pabsF to switch back to orthogonal.) Then, as I said earlier, a morph to change the graphic.
Ah, OK! (Or pabsW to switch from orthogonal to diagonal, as with the Great Wall; then pasF to rotate and pabsF to switch back to orthogonal.) Then, as I said earlier, a morph to change the graphic.