Go Zendo

[Maharani]

[Jon_Ko]

Looking at

and

I wonder about

[mafidufa]

I guess Green, but still not able to put a rule into words to test

[Maharani]

[mafidufa]

Rule Guess: When my intuition says it looks pretty

[Jon_Ko]

Maybe something like: if one colors has less stones in the center, it doesn’t have less on the edge. But I just checked the existing koans briefly.

[hoctaph]

[Maharani]

[hoctaph]

[Maharani]

[hoctaph]

(differs from 689 by one stone)

[Maharani]

[Jon_Ko]

@Jon_Ko

Maybe something like: if one colors has less stones in the center, it doesn’t have less on the edge. But I just checked the existing koans briefly.

Maybe this is something: If there are more stones of one color on the 9 intersections in the center, then there are more stones of the other color on the whole board.

[Maharani]

Kudos! <3

[Vsotvep]

Whoah, I’m impressed that you guessed it!

[Jon_Ko]

[yebellz]

Well, technically, the actual rule used the word “colour”

[UrbanSpirit]

What is the smallest central rectangle with side length at least 2? Wouldn’t that just be Tengen plus one adjacent point?

[Maharani]

I realized later that “side length 2” was ambiguous. I basically meant 3 x 3, 2 x 3, or 2 x 2 intersections depending on board size.

(On a square board, a rectangle of tengen + 1 intersection wouldn’t be central, even if I had allowed for rectangles of 2 x 1 intersections. (In any case, only square koans with uneven side lengths were submitted.))

[ArsenLapin1]

Can I be the universe for next round?

• Koans are valid go positions on any rectangular board
• You can post koans or rule guesses; in the case of a wrong rule guess I will provide one or more counterexamples.

Green

Red