Fail high codes

[Martin Brown]

In the commercial engines under complex positions near to mate or a major material promotion it is fairly common to get artificial scores back in the early stages of a search that failed high. Is there a standard interpretation of these magic code numbers. eg in Chessbase engines

279.99 +/- about 0.3

And then when mate seems inevitable but not resolved for depth
#150 and seq to about #159
#174 and seq to #178
and I think I have seen the odd #200 and #225

Is there a standard for this and does anyone know how to interpet them?

Thanks for any enlightenment.

[zamar]

Well, there definitely isn't any standard for those strange values!

[Aleks Peshkov]

EPD standard defines centipawn evaluation numbers and mate-distance values. I know at least Arena GUI does recognize it (in UCI mode).