Please help, why did i lose?

[RudiMller]

its that i dont get how to count stones. why did black loose, to me it seems it had more stones on the field?
thanks

[Conrad_Melville]

Black lost because all of the black stones are dead. A group needs two true eyes to be alive. See some of the beginner tutorials under the OGS Puzzles tab.

[smurph]

You should complete this here: http://playgo.to/iwtg/en

[Kosh]

or this…https://senseis.xmp.net/?TwoEyes