In defending a game with two Kings against two Kings and a man, the weaker side must have the move in the system in which the man is pinned.  The following position for instance is drawn with White on the move.

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

Diagram 103.

Black, on the move, would win by (1) 13-17, 22-13; (2) 14-9.

In Diagram 104 the drawing move is 27-31.  The game ought to run like this: 

(2) 20-24 23-27 (3) 24-28 27-32 (4) 30-26 31-27 (5) 22-18 27-24

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