464464 enclosure
Keywords: Opening
This is rare in pro games: the two marked stones seem to have too weak a hold on the corner territory.
This is a game Kato Masao-Sakata Eio (B) 1990-01-29. After
was played the middle game started with
. By
this play has become natural as a checking extension.
In the game Black used the gap at a and exploited the weaknesses in the corner indirectly, to strengthen the group on the outside, rather than invade.
The requested page 464464 enclosure 3-3 invasion awaits examples.
![[Diagram]](../../diagrams/11/4379f50c22f515ff888126c53d0ec3d4.png)
![[Diagram]](../../diagrams/13/ba1e8cdf8875917846af169b6d755ec5.png)
2024 the Authors,
published under the ![Sensei's Library [Welcome to Sensei's Library!]](../../images/stone-hello.png)