dhu163 wrote:I don't think finding counterexamples to proverbs is much help to getting stronger, but perhaps it is a interesting exercise.
Well, simply finding counterexamples is not in general worth all that much. We all know that go proverbs have many exceptions. But they are useful, nonetheless, as guides or default rules. Human beings are actually quite good at thinking in terms of default rules that have exceptions.

It is thus good to get an idea of what the exceptions are and where they lie. Under what conditions are the default rules applicable or not?
For instance, one default rule is to make the largest play. What are the exceptions? One obvious exception is to take a sente while you still can. Another exception, less well understood, is to take the last gote before a drop in global temperature. This idea probably lies behind that of getting the last big play of the opening and that of getting the last big yose, and, in some cases, the last play of the game.
Another example is the proverb to extend from a crosscut. As the discussion page on SL notes: “Eh?" says Tsutsumi, "Shouldn't one extend from a cross-cut?". "No, no, no", cries Ishikura. "That's only when there are no other stones nearby." (From Richard Hunter’s
Cross-cut Workshop, quoted on SL at
http://senseis.xmp.net/?CrosscutThenExt ... Discussion ). In this case, the extension may be the exception, but the point is that there are identifiable situations where the proverb applies, and other identifiable situations where it does not.
Another example is the proverb to play at the “centre” of three stones. Consider the exception that you show.
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- Click Here To Show Diagram Code
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When I had just learned that proverb, as a kyu player, I never dreamed that it would apply to this kind of situation. For one thing, I thought that it was about attacking the three stones, not defending them. For another, I thought that it did not apply to open situations, but to situations where the three stones were enclosed. I also thought that it was (usually) an example of the more general proverb about playing on the point of symmetry, not just in relation to the three stones, but in relation to the surrounding stones. Anyway, as I learned that proverb, I also learned something about when it applies and when it does not.
Lastly, there is the saying about attachment for defense. That’s one I had never heard of, but I have heard of the one about attachment for sabaki. That is more specific. The more general saying surely admits of more exceptions.
So, yes. Just cataloguing exceptions may not help too much. But understanding the scope and limits of the proverbs is valuable.
