have anyone idea what are Rybka Elos strength at play depths:
Thanks for the answers ?
give rybka to play at fixed depth in CCRL or CEGT and see the rating of it.
Rating in games against humans can be dependent on the opening book but it is correct not only for fixed depth.
I think that we have no money for thousands of games against humans so the interesting question is about CCRL or CEGT rating against computer programs when the opponent get fixed time control with fixed hardware when rybka get a fixed depth.
humans use search and rybka 1 ply can be outsearched by humans at long time control when the opposite may happen at 1 minute per game
so the level of rybka at 1 ply is going to prove nothing.
> lets go from opposite side, Rybka strength at 20ply is about 3000 Elo, could we make any conclusions ?
Hm, I think Rybka at 15ply is already 3000 elo, so she should gain something from the extra 5plies.
The problem it's this is pure speculation.
I doubt that. If some pieces are exchanged, rybka reaches 15ply much quicker so the strengh of rybka should go down during the game. Maybe rybka plays like 3000 elo in the early middlegame but then the strengh should start decreasing with fixed depth. In the endgame rybka should be much weaker at 15ply compared to a normal tournament game.
> Nobody knows what´s a ply in Rybka!
Vas does :)
Much better would be to use time or cpu power if this is an option.
> cpu power
How does that work?
If you want to try this for any engine you could use inbetween (or wb2uci), both have a switch to set the cpu-power.
What it do is to use suspend/resume on the thread to set the cpu usage.
> Isn't that just about the same as setting the depth to 1 or the time to x seconds or less?
Yes, but Rybka will take longer to move instead of moving instantly, so the human gets more time to think. I wasn't aware this could be used to handicap the engine.
Live and learn!
> have anyone idea what are Rybka Elos strength at play depths:
I think, this depends on the time controls, which are choosen for that game.
If doing 'Blitz' with 5 Minutes per game (or 2 minutes per game) this will result in a rather (very) strong play.
If playing a tournament with 3 minutes per move it will be much weaker (in relation to the strength of the opponents).
Powered by mwForum 2.27.4 © 1999-2012 Markus Wichitill