(3) 16-19 24-28 (4) 14-18 26-30 (5) 19-23 28-32 (6) 15-19 27-31

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

3 2 1

DIAGRAM 92.

Not 30-25 on account of 18-22.

(7) 10-14 31-26
(8) 14-17 26-31
(9) 17-22 31-27
(10) 19-16 27-24
(11) 16-19 and wins.

If, on the 10th move, White played 27-31 instead of 27-24, the game might proceed as follows:

(11) 18-15 32-28 (12) 15-19 28-32 (13) 22-26 31x22 (14) 23-27 32x23 (15) 19x17

These possibilities of exchanging "two for two" should always be looked for as they often occur, enabling a win within a few moves.

III