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Gentlemen, I'd like to put an oar into these murky waters. Let me say that, as a designer, I am very interested in piece values, and ways to derive them. I have had some thoughts and previous conversations on the subject, and my poor thoughts have led me to ask questions and make the odd observation on piece values, and I am truly interested in this topic, but... 

First, this is a page on a particular Capa variant. As such, and especially given the author's inclusion of a piece value chart and discussion, it is a fine place to argue piece values. It is not, however, a good place to stage ad hominem attacks on those who disagree with your position. [As an editor, I frown upon this practice... hint, hint!] But I am also a designer, and would like to ask some questions, so I ask you to play nice, and not drive people away with flame.

Second, I would like you to consider the piece values of pieces similar to Capa pieces, but not quite them. I offer you my games only, because other people have privately expressed to me their strong desire not to get dragged into arguments. As I respect their wishes, we are stuck with my games, and my pieces, for now. Others may suggest other pieces.

The games are:
 Great Shatranj [10x8]
 Grand Shatranj [10x10]
 Atlantean Barroom Shatranj [10x10]
 Lemurian Shatranj [8x8]
 Chieftain Chess [12x16]

Great Shatranj in particular is a shortrange version of Capa Chess, with no piece moving more than 2 squares and most pieces having a leaping ability. This should not be too difficult, I would hope, as all the pieces are exact analogs of the Capablanca pieces. 
Grand Shatranj is similarly a shortrange version of Freeling's Grand Chess, using a somewhat more powerful piece set than Great Shatranj, and Atlantean Barroom is a twisted version of Grand. No piece moves more than 4 squares in either game, and if 10x10 is too big for any reason, I'd be happy to see values for 10x8.
Lemurian is just 8x8, and thus 'easy', or at least easier, to figure piece values for, I would imagine. It is, in a very real way, a 'cut-down' version of Atlantean Barroom, with even piece moves being literally cut in half, to produce inclusive compound pieces that leap and move up to 3 squares, but may change directions.  
This takes us to Chieftain, a rather large game at 12x16, but with only 5 kinds of pieces, and no piece moves over 3 squares/turn. It also replaces pawns with non-promoting guards, simplifying that part of the evaluation. It does play with the role of kings and movement rules, though. 

Can you give me piece values for any of the pieces in these games, in a reasonable amount of time: say a week to a month? If this is pushing it, how much time is reasonable?

There are many other pieces and kinds of pieces that could be used, but these must suffice to make my arguments, unless someone else wishes to throw their piece[s] into the ring. 

I would particularly like to hear your values for the minister and high priestess for the three games they're in, and how it changes relative to the other pieces in the games. 

The shortrange Capa piece pair make interesting test pieces. Is their value constant or does it change over the three games? What about the relative values of the other pieces - can they be made 'absolute' over the 3 games, or do their values change from game to game, by how much, and why?

For those who design variants, these are fundamental questions I'm asking. Is there a system, or combination of systems, that can predict a piece's value reasonably accurately? And how close is 'reasonable'? 

I am very interested in these questions, and I know from personal communications that others are also interested, for their own games and pieces. Some would ask these questions if they weren't afraid of being insulted. 

I would like to leave Mr Aberg's page and any sense of animosity and start a piece value topic. It might be nice if the participants edited their previous remarks appropriately. Those who are not members may email me for any changes they may wish. 

Joe Joyce