Cut across

    Keywords: Go term

Chinese: 跨断 (kuā duān); 跨 (kuā)
Japanese: ツケコシ (付け越し) (tsuke-koshi)
Korean:

Table of contents Table of diagrams
Cut across
Hane away from the position
Hane into the position
The other cut
Extending
[Retsugen] (W) vs. [Shunsaku]
[Jowa] (W) vs. Sakurai Chitatsu
Jowa (W) vs. Ito Shusuke
Jowa (W) vs. Mizutani Takujun
Jowa - Takujun (cont.)
[Ito Showa] (W) vs. [Yasui Sanchi]
[Hashimoto Utaro] (W) vs. [Go Seigen]

Abstract treatment

[Diagram]

Cut across

B1 cuts by striking across the keima, away from the supporting black stones. This is generally preferable to cutting at a. White can dodge the cut by answering at b rather than a:

[Diagram]

Hane away from the position

This (B3 and W4) is not necessarily the continuation, but by playing the hane away from the position, White limits the loss to white+circle.



[Diagram]

Hane into the position

To push through is usually bad.



Black cuts easily with B3 and now two white stones are cut off.

[Diagram]

The other cut

Not striking across the keima, but cutting at B1 as in this diagram is considered vulgar, since White sacrifices white+circle easily to build good shape. Black has captured but one stone.



White's natural moves are good moves: blocking at W2, and either sacrificing white+circle in order to make shape as in this diagram, or extending as in the next diagram:

[Diagram]

Extending

If the surrounding position is strong enough, White can extend (stretch).



This is unlikely to occur, however, for if White were strong around, Black should not want to cut through the keima anyway.


Examples

Example 1: Sacrifice

In this example B2 is a sacrifice for shape and sente.

togo: Connection in sente I would say. The shape does not look very spectacular to me.



Example 2: Sacrifice

[Diagram]

Jowa (W) vs. Sakurai Chitatsu

B1 is a sacrifice for shape, sente, and aji.

togo: Black gets a second eye in sente, if I see correctly.



Example 3: Sacrifice

[Diagram]

Jowa (W) vs. Ito Shusuke

B2 is a sacrifice, mainly for territory.

togo: Connects in sente, I would say.

Example 4: Settle group

[Diagram]

Jowa (W) vs. Mizutani Takujun

W3 could be a sacrifice for territory. However, . . .

[Diagram]

Jowa - Takujun (cont.)

White ends up capturing the black+circle stone and settling his group in sente.

Example 5: Shinogi

Black uses not one, but two tsukekoshi in a row to make life.

Example 6: Sabaki

Hashimoto sacrifices W3 to skillfully negotiate treacherous waters.


Linguistic notes

The Japanese term tsuke-koshi is literally attach across. For some time we have used waist cut but this is not necessarily standard terminology.

In Chinese, B1 alone is called 跨 (kuā), the B1-W2-B3 sequence is called 跨断 (kuā duān). The character 跨 (kuā) means "straddle", and the character 断 (duān) means "cut".


See also


This is a copy of the living page "Cut across" at Sensei's Library.
(OC) 2014 the Authors, published under the OpenContent License V1.0.
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