Another remarkable point is the result. White won by 1 1/2 points. But realize that this means Black won on the board by four points before komi
Yeah, it looks like I misremembered.
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Nice fork! I’m always so happy to see someone find my code useful!
By the way, I think I noticed a bug. Using the mark tool on empty space seems to cause the app to hang in an endless loop.
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good catch! I’m not a front end programmer usually so a simple code base with no dependencies or frameworks is 
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Today Shin Jinseo showed us, the number of groups have nothing on him
Shin Jinseo (Black) vs Li Weiqing (White)
6 black groups vs just 2(or 3) white groups.
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What’s the result? I am impressed by the size of some of these groups
Did you try to have even more? Seems there is still some wasted stones/space. (30+19=49)
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No, but feel free to have a go at more.
I get 7 on a 9x9.
Give me the idea to propose it as exercise for full beginners to practice what is two eyes and connection/cut between the groups.
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Maximum number of groups
| Board | Number of groups |
| 9x9 | 10 |
| 13x13 | 15 |
| 19x19 | 31 |
For solutions see other posts in this thread.
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Maybe one could squeeze in more with seki 
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Hehe next exercice for beginners in view, to practice seki. Surely you get more groups if a group is a alived connected chain of stones. If’s like two groups for the prize of one, although a seki takes a bit more place to work.
So here on 9x9
That’s 10 groups.
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31 groups can live without seki on 19x19.
132 groups, for a given definition of the term, can live in seki on 19x19.
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Quite a nice design both (3 more groups with 49 stones to use only…, and the way to make Sekis with as less stones as possible)
No thanks, I pass.
Perfect for wallpaper for …
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Why black has a group with 2 eyes and white doesn’t?
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Why not?
Ah, perhaps I should have said using seki, if the living group is also being counted.
Linguistic point.