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        Arimaa >> General Discussion >> piece values
        
(Message started by: Swynndla on Mar 7^th, 2006, 3:50am)

Title: piece values
Post by Swynndla on Mar 7^th, 2006, 3:50am

In chess, the values of each piece has been mostly worked out (within a small variation) ... eg a Queen is worth 9 or 10 pawns, and a knight worth 3 pawns etc ... any thoughts on what values to assign arimaa pieces?

I know that pieces change in value as more material in exchanged, but that is the same in chess, and also differen't positional characteristics suit different pieces in chess (eg a knight does better than a bishop in a closed position, but in an open position it's the other way around). I suppose I'm talking about an average value.

I'm thinking that an E is worth more than 2 cats and a dog??

Title: Re: piece values
Post by Janzert on Mar 7^th, 2006, 6:55am

One of the more thorough discussions on this subject is the thread "(no) absolute score values for pieces?" (http://arimaa.com/arimaa/forum/cgi/YaBB.cgi?board=devTalk;action=display;num=1062013358) in the bot development forum.

Janzert

Title: Re: piece values
Post by Fritzlein on Mar 7^th, 2006, 11:53am

If you had to use static piece values I would suggest R=1, C=1.5, D=2, H=3, M=5, E=10, even though the other thread points out a bunch of reasons it is a bad idea to use static piece values. Specifically, an elephant is worth way more than two cats and a dog in the opening, but in a endgame of ERR vs. DCCRR, the side with more pieces has a big advantage, all else being equal. I'd be interested to hear your ideas on the material in that other thread.