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Aberg variation of Capablanca's Chess. Different setup and castling rules. (10x8, Cells: 80) [All Comments] [Add Comment or Rating]

H.G.Muller wrote on Thu, Apr 17, 2008 09:48 AM UTC:

Note that the piece values given on this page are not empirical values at
all, but theoretical values: they are derived from the way the piece
moves, and comparison with known values for another game (8x8 Chess) for
pieces that move likewise. Empirical values are values that are derived
from win probabilities (as derived by statistical analysis of games) from
positions with material imbalance.

I have played and analyzed many thousands of such games, using my engine
Joker80 (currently the best free WinBoard-compatible 10x8 engine) in self
play, and I can vouch for the fact that the piece values given here are no
good. The true values are:

P=85, N=300, B=350 (pairBonus=40), R=475, A=875, C=900, Q=950.

Note in particular that there is no significant difference in value
between A and C, and that A+P on the average lightly beats Q. The P=85 is
for a Pawn in the initial position; a healthy Pawn in the center, or a
passer, are of course worth much more, a backward or edge Pawn much less.