[Computer-go] CrazyStone in the 5-dan footsteps of Zen

[Don Dailey]

On Sat, Jan 7, 2012 at 2:03 PM, Jeff Nowakowski <jeff at dilacero.org> wrote:

> On 01/02/2012 05:04 PM, Rémi Coulom wrote:
>
>>
>> Improving the KGS rank at 5d is very difficult. The current
>> experimental version of Crazy Stone wins 78% against Crazy Stone
>> 2011. That's less than one stone difference on KGS. But I am sure
>> both Zen and Crazy Stone will reach 6d in 2012.
>>
>
> There are two problems with the KGS rankings:
>
> One, they are weighed down a lot by past games from weaker versions.
>
> Two, you have to worry about people trying to game the system. I found
> strong evidence that one of the frequent CrazyStone players was losing
> games intentionally against a weaker bot, while at the same time winning
> frequently against CrazyStone.
>

Why would someone do this?   Is it a vendetta against CrazyStone or could
it be some kind of  pump and dump scheme?     What I mean is the scheme
where you basically give a bunch of your rating points to another player
for safe keeping,   recover them by playing normally against other players,
and then take them back from the original player.      It's even possible
that he operating the computer player he was using which would make this
easy to do.     The admin can probably check to see if the login times
frequently coincide or if this bot plays a lot of other players or mostly
just him.

And maybe it's just a coincidence?

Don



>
> I brought this up with an admin, and he said they were looking into it,
> but several days have gone by and the player was not deranked (which is the
> usual punishment for gaming the system, and would remove past games from
> the rank calculation).
>
>
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