What relative point values of pieces do engines use? Humans use:


Pawn = 1
Knight = 3
Bishop = 3
Rook = 5
Queen = 9.5
Bishop pair = +0.5


But I would like to know what relative point values do engines use (preferably strong engines, like Stockfish, Houdini, Rybka, Komodo, ...).

If the point value that the engine assign to the pieces depends on the position of the pieces on the board (for example a White Knight on a1 is only worth 2.6 but on e5 it's worth 3.4), than I would like to know the average point values of the pieces.
Rybka/Komodo/Houdini are not open source and their values aren't readily available, but the current strongest conventional engine, Stockfish, uses these values (lines 182-186):

PawnValueMg   = 128,   PawnValueEg   = 213,
KnightValueMg = 781,   KnightValueEg = 854,
BishopValueMg = 825,   BishopValueEg = 915,
RookValueMg   = 1276,  RookValueEg   = 1380,
QueenValueMg  = 2538,  QueenValueEg  = 2682,

The &quot;Mg&quot; column is value during the mid-game, and the &quot;Eg&quot; column is for the endgame.
As you might guess, these numbers are empirically tuned.