|---------------------------------------| 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.

THE FIFTH POSITION

White is on the move, and it is evident that he loses if he moves the man on 27 permitting black to reply 11-15.  The only way to save the game is to sacrifice the man on 20 by 20-16.  The following play would ensue.

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

Diagram 106.

(2) 11-2O 27-23 (3) 20-24 22-18 (4) 24-27 18-9 (5) 10-14

Preventing 23-18

(5)  ...            9-6
(6) 27-31           6-2K
(7) 31-27           2-6

White cannot save the piece and so he runs his opponent.

(8) 27-18           6-9
(9) 13-17           19-15
(10) 18-11           9-18
(11) 17-22           18-25
(12) 11-15           25-22

Drawn.  White would lose by 21-17, as after (13) 15-18, 17-13; (14) 18-14, 25-22; (15) 12-16 he cannot gain the double corner.

The following has been suggested as a suitable problem to be called sixth position.

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

Diagram 107.—­Black to move and white to draw.