H. G. Muller wrote on Fri, Oct 5, 2018 05:47 PM UTC:
Basically this is just a scaled version of the 3.25/3.25/5.00/9.50 values. Except that the Pawn was weakened by 5%.
But a Pawn is the most variable piece of all; it is really very ill-defined what an advantage of 1 Pawn means. Rook Pawns, Pawns on central files, doubled Pawns, passers, 7th-rank passers... These all have completely different values, with as much as a factor 5 between them. For this reason I always use the Queen as calibration standard.
Basically this is just a scaled version of the 3.25/3.25/5.00/9.50 values. Except that the Pawn was weakened by 5%.
But a Pawn is the most variable piece of all; it is really very ill-defined what an advantage of 1 Pawn means. Rook Pawns, Pawns on central files, doubled Pawns, passers, 7th-rank passers... These all have completely different values, with as much as a factor 5 between them. For this reason I always use the Queen as calibration standard.