Sounds fun and interesting experiment, I have noticed the increase in
preference to the 4-4 as of lately across the majority of AI. I still
prefer the 5-5 opening it seems to hold against Katago at the moment. Maybe
i'll test out some things to see if it can find some interesting new moves.
Is it still the Kata-bot account on OGS?.

Kyle Biedermann
Creator of Deep Scholar

On Fri, May 8, 2020 at 3:28 PM David Wu <> wrote:

> I'm running a new account of KataGo that is set to bias towards aggressive
> or difficult moves now (the same way it does in 19x19 handicap games), to
> see what the effect is. Although, it seems like some people have stopped
> running their bots.  Still maybe it will be interesting for the
> remaining players, or any others who decide to re-turn-on their bot for a
> little while. :)
> It seems like some fraction of the time, it now opens on 5-5 as black,
> which is judged as worse than 4-4 in an even game, but presumably is more
> difficult to play. I suspect it will now start to lose a noticeable number
> of games now due to overplaying, and there's a good chance it does much
> worse overall. Even so, I'm curious what will happen, and what the draw
> rate will be. Suddenly having some 5-5 openings should certainly add some
> variety to the games.
> On Thu, May 7, 2020 at 12:41 PM David Wu <> wrote:
>> Having it matter which of the stones you capture there is fascinating.
>> Thanks for the analysis - and thanks for "organizing" this 9x9 testing
>> party. :)
>> On Thu, May 7, 2020 at 12:06 PM Rémi Coulom <>
>> wrote:
>>> If White recaptures the Ko, then Black can play at White's 56, capture
>>> the stone, and win by 2 points.
>>> On Thu, May 7, 2020 at 5:02 PM Shawn Ligocki <> wrote:
>>>> Thanks for sharing the games, Rémi!
>>>> On Thu, May 7, 2020 at 6:27 AM Rémi Coulom <>
>>>> wrote:
>>>>> In this game, Crazy Stone won using a typical Monte Carlo trick:
>>>>> On move 27, it sacrificed a stone. According to Crazy Stone, the game
>>>>> would have been a draw had Aya just re-captured it. But Aya took the bait
>>>>> and captured the other stone. Crazy Stone's evaluation became instantly
>>>>> winning after this, the sacrificed stone serving as a threat for the
>>>>> winning ko fight, 18 moves later.
>>>> Wow, I did not imagine how that move would be useful later! But the
>>>> very end is confusing to my human brain, couldn't White move 56 retake the
>>>> ko and win it? It seems like Black only has one real ko threat left (J4
>>>> maybe). But White also has one huge threat left (D3), so it seems like
>>>> White should win this ko and then be about 4 ahead with komi. Am I
>>>> missing something?
>>>> -Shawn
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