(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.50]TM[]
PW[YETI]PB[adum]AW[oc][pc][qd][qf][rf][dj][dp][pp][nq]AB[ec][nc][nd][od][pf][qg][rg][pj][qn]LB[cd:A][hd:H][pe:G][df:B][cn:C][on:F][cq:D][fq:E]C[best move for black?]
(;B[cd]CR[cd]C[too slow])
(;B[df]CR[df]C[RIGHT
good extension from corner, working on above moyo, and stops white from making a good extension into the corner])
(;B[cn]CR[cn]
;W[co]CR[co]
;B[dn]CR[dn]
;W[fp]CR[fp]C[not good for black])
(;B[cq]CR[cq]C[too early to come in like this])
(;B[fq]CR[fq]C[this area is uninteresting])
(;B[on]CR[on]C[too slow and small a move for this stage of the fuseki])
(;B[pe]CR[pe]C[not sente, and white will not try to cut here at this stage])
(;B[hd]CR[hd]C[too slow, lets white approach the upper-left corner]))