Enter Your Reply The Comment You're Replying To Joe Joyce wrote on Tue, Jul 31, 2007 02:24 AM UTC:George, are you saying [in your 2007-07-27 CVComment] that you use a method similar to JKLewis, who inserts test pieces into a live game position? Although he uses 1 specific position, and apparently you may use many, the basic concept is 'real-world test, under actual conditions' for both, yes? No? And I have a bad sense of direction; I often miss the point. Heck, sometimes I miss the entire party. But I believe in looking seriously at obvious exceptions or clearly extreme cases only after there is some sort of explanatory framework for the common and the occasional/easily recognizeable cases. I'll take a theory of the familiar and easy first. But, as I've said before, I'm conservative in a lot of ways. If you can tie the analysis of outre pieces into your work on the commoner pieces, great! You've saved a lot of work on the other end. Graeme, I was probably optimistic when I suggested we could get 90 to 95% accuracy on initial piece evaluations. Half a pawn vs a rook is 10%, 0.5 to 5.0. Once you get past queen, you're down to 5%, 1 part in 20. This is exactly the range Derek is talking about, and the answer is exactly what he suggests. But this is an enormous effort [possibly we could tie the human part into a tournament or three], so there are some considerations. My question is: 'what games do we look at?' What games, what pieces, what sizes...? Initially, I'd recommend treating games that fall somewhere within the 8x8 to 10x10 size range. These are the most popular sizes. More next time. Edit Form You may not post a new comment, because ItemID Shatranj Values does not match any item.