24. Chasing the same type of pieces

Diagram 51: Red (in Capital) moves first

R31 r98
R12 r87
R23 r78
R32 r89
R21 r97
R13 ...
.

.


Diagram 52: Red (in Capital) moves first

R8+2 r5+3
R8-3 r5-2
R8+2 r5+2
R8-2 r5-1
R8+1 ....

Explanation:
In Diagrams 51 and 52, the Red Rook perpetually sacrifices and Black can capture it but, due to the circumstance, does not want to. The game should be a draw.


Diagram 53: Red (in Capital) moves first

C38 c23
C87 c32
C78 c23
C87 c32
C78 ...

Explanation:
The Black Cannon cannot capture the Red Cannon. What Red is doing is perpetual chase instead of perpetual threatening to checkmate. Red has to change.


Diagram 54: Red (in Capital) moves first

C72 c87
C23 c78
C32 c87
C23 c78
C32 ...

Explanation:
Although the Black Cannon is confined to the King's row, Red cannon's attack on it is not a perpetual chase because in one of Black Cannon's moves it is protected.


Diagram 55: Red (in Capital) moves first

N2+4 n7+9
N4-2 n9-7
N2+4 n7+9
N4-2 n9-7

Explanation:
The Black knight is blocked, therefore, the Red knight is perpetually chasing the Black knight. Red has to change.