Double snapback

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  Difficulty: Intermediate   Keywords: Tactics, Problem, Go term

Chinese: 双倒扑 (shuāng dào pū)
Japanese: -
Korean: -

A double snapback is a when two separate snapbacks are joined up, as in this diagram:

[Diagram]

Double snapback


The following gives another type of snapback[1]

[Diagram]


One might use the terms crossed or parallel to distinguish between these two sorts of double snapbacks.[2]

The following is an interesting snapback position, but it doesn't qualify as a double snapback[3]

[Diagram]

Not a double snapback

Solution diagram from a classical problem - in SL as Snapback Problem 41.

Here the two white+circle chains are in atari and there is a snapback on the black+circle stone. However this is not a a double snapback as there is only one black stone in atari.


Examples

tderz: From WeiQi the predecessor of WeiQi TianDi, 1980, Nr. 5, p.25 and, of course, some other famous sources...

In all problems Black has sente.

[Diagram]

Problem 1

/ Attempts1
/ Solution1?

[Diagram]

Problem 2

/ Attempts 2
/ Solution 2?

[Diagram]

Problem 3

/ Attempts 3
/ Solution 3?

[Diagram]

Problem 4

/ Attempts 4
/ Solution 4

See also: Xuanxuan Qijing Problem 198


Malcolm: Here's another - I don't know where it comes from.

[Diagram]

Problem 5

/ Attempts 5
/ Solution 5


f3etoiles: It comes from Xuanxuan Qijing. Here is a personal improvement (beware of the order of moves)

[Diagram]

Problem 6 (Black to play and live)

/ Attempts 6
/ Solution 6?


Links

Notes

[1] This example is from from Denis Feldmann's [ext] bestiary.

[2] This is the terminology used by Feldmann.

[3] This is only my (Malcolm's) opinion.


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