Oki Wants Ikken Tobi

    Keywords: Shape, Tactics

hnishy: In the first place, a below is a tsuke (attachment) or a hasami-tsuke (clamp), not an oki (placement). In addition, ikken-tobi (one-point jump) is pointless because B1 doesn't need the third line stone.

The name of this shape is a pun on Obi-Wan Kenobi (a figure from the film series Star Wars). At the same time it indicates that, when a certain placement (oki) threatens, the following one point jump (ikken tobi) is called for. I discovered this line of play, after having it seen in Gokyo Shumyo, Section 1, Problem 18, Gokyo Shumyo, Section 1, Problem 34 and Gokyo Shumyo, Section 1, Problem 36. It is an example of How to learn from examples ? - a thread on rec.games.go started by Robert Jasiek. # : - 7

-- Dieter Verhofstadt


White threatens the placement at a. The placement will then either connect to white+circle, or connect underneath to white+square.


B1 makes good shape, and deals with the placement.


White can't connect at W5, because she is suffering from shortage of liberties.

Bill: Here is the usual defense against the clamp.


There must be special circumstances for the tesuji of this page to be correct.

Oki Wants Ikken Tobi last edited by hnishy on January 14, 2023 - 03:11
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Login / Prefs
Sensei's Library