Now Black cannot play (6) 16-19 because of the exchange 32-27; (6) 16-20 would also lose quickly through 15-18, (7) 24-19, 32- 28, (8) 19-16, 18-23. The best try is (6) 24-28.
Against 15-18 Black would now draw by (7) 16-19, 32-27; (8) 19- 23.
The only way to win is
(6) … 15-11
after which Black can do no better than
(7) 16-19 32-27
(8) 28-32 27-31
(9) 32-28 11-16
(10) 19-24 16-19, etc.
(C) (5) 24-19 32-28 (6) 12-16 28-32 (7) 19-24 18-15
and White continues as shown before.
(D) (5) 24-28 18-15 (6) 28-24 32-28 (7) 24-27 15-18 (8) 12-16 28-32 (9) 27-24 18-15
and wins as before by 15-18 in reply to (10) 16-20 or 15-11 in reply to 24-28.