26. When a Cannon keeps attacking a Rook, disregard whether the
Rook is protected or not, even if the Rook doesn't move and both
sides only move the cannon mount, it is a perpetual chase. (See
examples in Diagram 61 and 62)
Diagram 61: Red (in Capital) moves first
C2-7 n9+7
M5+3 n7+5
M3+5 n5-7
M5-3 n7-6
M3+5 ....
.
.
Diagram 62: Red (in Capital) moves first
C1-1 c8-1
G5-6 c8+1
G6+5 c8-1
G5-6 c8+1
G6+5 ....
Explanation:
In Diagrams 61 and 62, the Red Cannon moves the Guard or Minister to
perpetually chase the Black Rook. Red has to change the move.