Black to move and win.

The win is thus brought about:—

11- 7(b) 1- 525-22 5- 1
10- 615-19 9- 5 7-10
1-10 5- 122-18 1- 5
9- 619-23 5- 910- 6
7- 2 1- 518-15 5- 1
(a) 6- 123-26 9- 514-10
2- 6 5- 915-11 1- 5
1- 5 26-30 5- 9 6- 1
10-15 9- 511- 7 5- 9
5- 130-25 9- 5 1- 5
6-10 5- 910-14Black wins.

Var. (a.)

13- 9 3- 7 8-1118-22
10-15 4- 815-18Black
6- 1 7-1011-16wins.

Var. (b.)

13- 9 4- 8 8- 3Black
3- 715-18 7- 2wins.

XIX

Classified List of Principal Openings.

9-13 Opening.