position : strelka (probably equals) rybka (not eq) fruit

[ozziejoe]

When people said rybka was a clone of fruit, i used this position to suggest otherwise. Rybka 1.0 (and later rybkas) seemed to highly value piece activity over pawn structure, and in this ubsurd position, greately underestimates whites weaknesses in pawn structure. No other engine i have shows this kind of misestimation, except strelka (and later rybkas)

[d]rnbqkbnr/pppppppp/8/8/8/2P1P1P1/P1P1P1P1/RNBQKBNR w KQkq - 0 1[d]

strelka 1.8 (-.72; d=16)

rybka 1.0 beta 32 bit (-.73 depth 14; i think strelka adds two to rybkas depth; -.66, d16 )

toga 1.3x4 (-2.10; d = 16)

glaurung 1.2.1 smp (-2.09 d = 16)

Fritz9 (-2.64); d= 16

shreder 10 (-3.06; depth 16)


Later rybka seems to understand pawn structure a little better
rybka 2.3.2a mp = -1.12 d=16