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referring to version 34 of the page, as edited by DrK on 16th May 2007:
I've never seen the other two shapes in the "variation" diagram referred to as "tiger"; also I find the reference to oiotoshi to be confusing and possibly not relevant (especially since the diagram is an example of snapback, which is not the same).
I would feel rude simply reverting this page to the previous version--possibly there is a valid point to DrK's contribution and there's something I'm not understanding properly--but the page as it stands now doesn't make a lot of sense to me. What do others think?
Bob McGuigan: DrK's diagram isn't oiotoshi, it's just a snapback (uttegaeshi in Japanese). I think the page should be reverted.
DrK: Hi. If you think the change is incorrect that's fine with me. Please change or revert. However I would suggest that it should not be reverted straight-away because I did not just make this up. I read in a Chinese beginner go book how the three diagrams are also called tiger shapes, which was a surprise to me then too, but then the author went to explain how many tactical plays come from intentionally play at circle point, e.g. snap-back (sorry not oiotoshi). Apologise for the confusion with the misuse of term and poor diagram but I still think more people (esp. from someone who read Chinese go books and can confirm what I read) should have a look first. I think I have a valid reason to change the page (though the implementation needs work) to point out that the key feature of tiger shape is not the three stones arrangement but the arrangement of number of liberties between them.
Note I've corrected the errors mentioned (thx by the way) but this is my first edit so I am terrible with diagrams. If someone else can change (e.g. add move order to snap-back diagram) it will be great. What do you think?
better this way ? We may need a Chinese expert to confirm Drk's reading.
Dieter
The citation for the book is:
Yansheng Zhai (1942-), Wei qi chu jie, or "Go" for beginners, Cosmos Books Ltd, HK, 2003, p.26.
Yes, the new version seems better to me. (The "push through" diagram is also new to me--I didn't even know this shape had a name--but if people really are calling it "tiger" then it may as well stand.)
Another reference to the corner and side versions of the tiger's mouth is "Master Go In Ten Days" by Xu Xiang and Jin Jiang Zheng published by Yutopian Enterprises, page 18, Diagram 15.