32 31 30
+———————————————————-+
| | | | | | ** | | | 29
|———————————————————-|
28 | | | oo | | | | | |
|———————————————————-|
| | | | oo | | ** | | | 21
|———————————————————-|
20 | * | | | | | | | |
|———————————————————-|
| | | | | | | | | 13
|———————————————————-|
12 | | | | | | | | |
|———————————————————-|
| | | | | | | | | 5
|———————————————————-|
4 | | | | | | | | |
+———————————————————-+
3 2 1

DIAGRAM 104.—WHITE TO MOVE.

(6) 26-23 24-20

and White moves back and forth between 24 and 20. In the position of Diagram 105 White draws by:

(1) … 23-19 (2) 28-32 19-24 (3) 7-2 24-19 (4) 2-6 19-24 (5) 6-9 24-19 (6) 9-14 19-24 (7) 14-17 15-19

32 31 30
+———————————————————-+
| | | | | | | | | 29
|———————————————————-|
28 | ** | | | | | | | |
|———————————————————-|
| | | | oo | | | | | 21
|———————————————————-|
20 | | | | | | | | |
|———————————————————-|
| | | | oo | | | | | 13
|———————————————————-|
12 | * | | | | | | | |
|———————————————————-|
| | | | ** | | | | | 5
|———————————————————-|
4 | | | | | | | | |
+———————————————————-+
3 2 1

DIAGRAM 105.—WHITE TO MOVE.

Changing the guard

(8) 17-22 19-23

and Black can make no progress.