During the middle game I often get confused and can't see the most important move. This type of position is a good example for my difficulties to decide the status of a local group.
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]TM[]
AW[dn][fn][do][fo][fp][kp][bq][cq][dq][eq][cr]AB[gl][cm][dm][em][cn][co][bp][cp][hp][fq][gq][dr][er]
(;B[en]CR[en]
;W[hn]CR[hn]
;B[ep]CR[ep]
;W[bs]CR[bs]
;B[ar]CR[ar]
;W[eo]CR[eo]
;B[dp]CR[dp]C[RIGHT White's C3 Group cannot escape])
(;B[dp]CR[dp]
;W[ep]CR[ep]
;B[en]CR[en]
;W[hn]CR[hn]C[Black captures two white stones eventually , but it is possible to get the five stones in the corner. Try again.])
(;B[ar]CR[ar]
;W[hn]CR[hn]
;B[dp]CR[dp]
;W[ep]CR[ep])
(;B[bs]CR[bs]
;W[hn]CR[hn]
;B[dp]CR[dp]
;W[ep]CR[ep]))