|Quest of the lost systems|
|Chapter One: Yagura|
|Section 2: Formation with black Rook on 2i|
What Kato did in the aforementioned game proved that the R-2i formation
didn't work when White chose to wait. It functions when Black takes advantage
of White's offense, but is not fit for having the initiative.
Did White's cautious move, B-4b, become joseki, then? The answer is no.
There was a big change in the yagura conception which drowned out a minor
adjustment like B-4b. The big-bang in the yagura, as it were, was the idea
of immobile Fu(P) on the Rook file. I have to add that the idea of keeping
the P unmoved was not exactly novel. But it used to appear in combination
with suzume-zashi, so the meaning was different. Now we distinguish the
new yagura from the old one, the immobile P on the R file demarcating the
boundary line. In the old yagura, P-2f was thought of as an unnecessary
move, if Black was about to attack along the first file. The idea came along
with the idea of the P-on-2g suzume-zashi. The present view is: P-2f is
not necessary because R will come on the third file, which is to be the
field to open fire.
It took a long time for the present view to replace the old one. The old-style
suzume-zashi with P on 2g also fell prey to the bo-gin, and made its exit.
Then there was an explosion of the immobile P on the second file, together
with the idea of shifting the R on the third file.