Parallel Fractional Go Game 4

I implemented a confirm button once, but back then it leaked the other players’s moves to the last one to play, so we postponed it. But now I think that changed.

4 Likes

I looked at our discussion from back then and there are still some open questions. E.g. in normal go one would like to have previews of captures, but not in one-color go.

2 Likes

Now that only visible state is available in GameView (rather than the full game tree) it should be a lot easier to know what we should or shouldn’t do. In the instance of One Color go, it’s now impossible to meaningfully implement captures client-side.

2 Likes

Reminder @benjito @Feijoa @yebellz @fuseki3 @Jon_Ko @Gooplet @A_Normal_Name

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Round 19

Game link

4 Likes

Reminder @benjito @Feijoa @yebellz @fuseki3 @Jon_Ko @Gooplet @A_Normal_Name

4 Likes

Round 20

Game link

In the upper right @A_Normal_Name white_cyan secures the blue chains by connecting. Meanwhile @fuseki3 brown2_v2 puts one of @Jon_Ko s white_green stones in Atari, who collides with @benjito black_green at a key point on the right.

On the left side @martin3141 brown1 connects in the center, and @yebellz black_cyan blocks white. @Gooplet white_magenta attaches to blacks nose from below.

@Feijoa black_magenta pushes into the lower side, where white is a little bit short on liberties.

3 Likes

The green/black stone at the bottom-centre of this screenshotted area is technically in atari, just noticed, and may be worth a connection by @benjito if we want to continue to cut off the blue group on top
Screenshot_20241203-111939_ASUS_Launcher (1)

(Interestingly, I could add a stone to protect from a white capture also, and it would also connect the black fractional groups, although it seems less efficient than a green-black one)

3 Likes

But White is still connected through the fractional stones (above and to the right), right?

2 Likes

Oh yes, although the blue group is technically lacking full eyes

If blue-white tries to make eyeshape on the right edge, blue-black can fill their eyes in thanks to the fractional shared blue-black-white stone there, which is a cool tesuji.

(At the points above and to the right of the blue-black-white stone)

So that blue group technically only has one potential eye as it can never make eyes on the right.

(For example, if blue-white plays the point to the left and above the blue-black-white stone, blue-black can fill the eye by playing the point above the collision stone the next turn–cool fractional Go techniques.

And the blue-black stones won’t die immediately, due to friendly black chains of black-green stones along with the blue chain of blue-white stones.

Fractional Go groups are so interesting ! :blush:)

3 Likes

Is it? I thought it’s connected via the green&white stone next to it

If that doesnt connect things, then i think my whole top right corner is screwed :sweat_smile:

1 Like

Green connects through white_green, but black doesn’t. The black_green stone is part of a large green chain with plenty liberties, and also part of a (single stone) black chain with one liberty. If either chain loses its liberties, it gets captured.

2 Likes

Oops :sweat_smile: in that case, i can connect out, but i think i have a much bigger problem

4 Likes

I think it depends on what’s the future of the big blue chain in the upper right. Could turn out to be a big capturing race :slightly_smiling_face:

1 Like

I was really surprised that we were allowed to block black on the right side. I was convinced you and @yebellz would try to connect out.

1 Like

Ah yeah, it was nice timing to cut in round 17 ^^

Round 21

Game link

On the bottom @Jon_Ko white_green captures three black stones and opens some liberties for white.

On the left side @Gooplet white_magenta @Feijoa black_magenta and @martin3141 brown1 all collide! Close by @yebellz black_cyan expands their grip on the upper left.

In the upper right @benjito black_green and @fuseki3 brown2_v2 both connect endangered stones. @A_Normal_Name white_cyan moves into the corner.

3 Likes

Reminder @benjito @Feijoa @yebellz @fuseki3 @Jon_Ko @Gooplet @A_Normal_Name

4 Likes

Round 22

Game link

3 Likes