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Good Empty Triangle
Keywords: Shape
Efficiency is one aspect of shape. Late in the game, especially, it can be obviously correct to make an empty triangle and making an empty triangle can also be the vital point. Example 1
unkx80: I don't think it's so much about overconcentration. I believe that it's got more to do with destroying White's eye shape.
Bill: Well, it is a question of emphasis, isn't it? Anyway, let's take away the
This is fine for both players, no? Black does not need an extra stone. Example 2
This problem comes from the Tesuji Dictionary, by Segoe Kensaku and Go Seigen. They say that if you get this one right, you are 5 dan. (Of course, you have a big hint. ;-)) Example 3
The sequence of
Cruncher: isn't this a Guzumi? I stumbled upon these pages, but they do not reference each other... Tristan: You're right, Example 3 is certainly a guzumi. I'm not sure if guzumi refers to all good empty triangles or only the specific shape in Example 3, though. According to the discussion on guzumi, it may be a general term for makeshifts, but that discussion is not conclusive. This is a copy of the living page "Good Empty Triangle" at Sensei's Library. ![]() |