Sealing in by cutting across
![[Diagram]](../../diagrams/19/56b3cd1e56402fad6173c62e3a2b28c4.png)
Starting position
Black can set up a useful sequence by cutting across
![[Diagram]](../../diagrams/1/c0cfae6fda5f628c0242b64aa1ef6346.png)
Sealing in
Black threatens to cut White apart. By capturing
firmly with
White keeps her stones connected, but now Black can play
in sente, sealing White in.
On /discussion, we discuss the merits of giving atari by
at a before capturing at
.
Technique as explained by Tesuji Dictionary
![[Diagram]](../../diagrams/14/b6fd39bb7aeac9399754c108ca9a294b.png)
From Fujisawa Hideyuki's Tesuji Dictionary (vol. I, p.63)
In professional practice
![[Diagram]](../../diagrams/33/39aa0cfebb77bf4708e0644f6613aa85.png)
Moves 45 to 51
Black is O Meien, White is Lee Sedol. White is sealed in and proceeds at a to make life for his stones.
resists against the above mentioned technique:
![[Diagram]](../../diagrams/10/3f7ad2017a3030803d95069516d039d4.png)
Moves 45 to 51
Regardless the fact that
makes a ladder that doesn't work, Black connecting with
and
is probably unbearable.