37. When A's Rook and King are controlled by B's Rook and Cannon,
A cannot use a Knight or Cannon to perpetually chase B's Rook.
(See examples in Diagrams 94 through 96)
Diagram 94: Red (in Capital) moves first
K4-2 r67
K2+4 r76
K4-2 r67
K2+4 r76
K4-2 ....
.
.
Diagram 95: Red (in Capital) moves first
K4-2 r87
K2+4 r78
K4+2 r87
K2-1 r78
K1+2 ....
Explanation:
In Diagrams 94 and 95 the Red Knight is perpetually chasing the
Black Rook. Red has to change or loses.
Diagram 96: Red (in Capital) moves first
C9-6 r6-1
C9+1 r6-1
C9+1 r6+2
C9-2 r6-1
C9+1 ....
Explanation:
Red's Cannon is perpetually chasing the Black Rook. Red is
violating the rule.