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

Diagram 118.

This is the longest stroke known to have occurred in actual play.  The game from which the above position arose went as follows: 

Black White

(1) 12-16         21-17
(2) 16-20         17-13
(3) 10-14         23-19
(4) 14-17         19-16
(5) 17-21         16-12
(6) 11-16         22-18
(7) 8-11          25-22
(8) 7-10          26-23
(9) 10-14         24-19
(10) 14-17         31-26
(11) 4-8           19-15

Now the position of the diagram is reached, in which Black wins by

(12) 21-25 30-14 (13) 16-19 23-7 (14) 3-19 12-3 (15) 19-24 28-19 (16) 2-7 3-10 (17) 6-31 13-6 (18) 1-17 22-13 (19) 31-15

Completing a stroke, which removes 18 pieces from the board.

(19) ... 32-27
(20) 15-10 29-25
(21) 5-9

To get the move

(21) ... 13-6 (22) 10-1 25-22 (23) 1-6 22-18 (24) 6-10 27-23 (25) 20-24 23-19 (26) 24-27 18-15 (27) 10-7 19-16 (28) 27-31 15-11 (29) 7-3 16-2 (30) 31-27 11-8 (31) 27-24 8-4 (32) 24-19 4-8 (33) 19-15 8-4 (34) 15-11 and wins.