[gnugo-devel] level 11/12? (was: Three stone games)

[Arend Bayer]

On Fri, 29 Mar 2002, Daniel Bump wrote:

> 
> > I'd even wonder whether we should offer new levels 11 and 12 or so, that
> > could e.g. be running with --owl-threats.
> 
> I like this idea.

I have run two 20 games matches with GNU Go plain vs GNU Go --owl-threats.
The plain version won 25 out of 40. So this does not look very encouraging,
although of course 40 games are not enough to decide for sure.

Also, --owl-threats might be more useful against humans or other programs;
we have seen GNU Go loose or abandon a lot of groups lately, which is of
course not so much a problem in games vs itself. So maybe the match was
not so meaningful at all.

The time penalty for --owl-threats was around 40%.

I am not sure what conclusion to draw from this. Btw, regardless whether
--owl-threats is an improvement at the moment (which I am still inclined
to believe), I am convinced that it can be made both more useful and time
efficient with some changes. But that's for post-3.2 of course.

Arend



White: 3.1.29 --owl-threats
Black: 3.1.29 plain

RE[B+34.5]
RE[W+10.5]
RE[W+31.5]
RE[W+0.5]
RE[W+62.5]
RE[B+27.5]
RE[W+6.5]
RE[B+13.5]
RE[B+27.5]
RE[W+46.5]
RE[W+1.5]
RE[B+20.5]
RE[B+20.5]
RE[B+4.5]
RE[B+0.5]
RE[W+14.5]
RE[B+11.5]
RE[W+19.5]
RE[B+6.5]
RE[B+9.5]

White: 3.1.30-pre-1 plain
Black: 3.1.30-pre-1 --owl-threats

Game 1: B+33.5 B+33.5
Game 2: W+13.5 W+13.5
Game 3: B+2.5 B+2.5
Game 4: W+4.5 W+4.5
Game 5: B+2.5 B+2.5
Game 6: W+3.5 W+3.5
Game 7: W+2.5 W+2.5
Game 8: W+28.5 W+28.5
Game 9: W+39.5 W+39.5
Game 10: B+0.5 B+0.5
Game 11: B+21.5 B+21.5
Game 12: W+11.5 W+11.5
Game 13: W+24.5 W+24.5
Game 14: W+3.5 W+3.5
Game 15: W+21.5 W+21.5
Game 16: W+22.5 W+22.5
Game 17: W+59.5 W+59.5
Game 18: W+7.5 W+7.5
Game 19: B+0.5 B+0.5
Game 20: W+13.5 W+13.5