Rule guess: All chains are of length 1.
(Not that I believe this, but lets get the counter-examples.)
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Counterexample
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I’m guessing: every stone touches a stone of opposite colour
Counterexample
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Since 711 is the only green one so far, let’s try some variations on it:
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Red, red, red, green
When I download the images of the coloured koans, their numbers are updated, so these have become koans 722 to 725 instead of 718 to 721, is there a way to avoid that?
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Sort of, see my comment here:
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The empty board is red.
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Rule guess: There are at least one black and one white chain with exactly two liberties.
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Counter-examples:
(I don’t know why the green counter-example did not get a number.)
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Next rule guess: There’s at least one single black stone being clamped.
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Counter-examples:
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I don’t see any potential rule, so I want to check for rotation/reflection invariance and what stones can be added to 711.
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738: Green, 737: Green, 739: Red.
Link to all koans so far
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Red!
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Currently my only idea is to invert the stone colors of all known koans, hoping this would give us some new insights.
The six green koans would become:
green green red red green red
The eleven red koans would become:
Red red red red green green red green red red red
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So in these koans inverting the colors makes a difference:
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