Keller Opening
F. Openings
1●
2●
3●
4●
5●
6●
7●
8●
9●
10●
11●
12●
13●
14●
15●
16●
17●
18●
19●
20●
21
22
23
24
25
26
27
28
29
30
31●
32●
33●
34●
35●
36●
37●
38●
39●
40●
41●
42●
43●
44●
45●
46●
47●
48●
49●
50●
Main line
Black builds a fast right-wing column (17/11/6) while White stacks solidly behind the diamond (39-33, 44-39, 50-44). The tension breaks when Black throws in 19-23, from here it is a concrete tempo fight on the right.
Main line
Read the idea
The lesson is on the board.