(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.50]TM[1800]OT[5x30 byo-yomi]
PW[yuukikki [KGS\]]PB[matsumoto [KGS\]]WR[8d]BR[7d]DT[01.12.2004]SO[BiGo Assistant Full Edition]US[BiGo Assistant Full Edition]RE[W+Resign]
;B[qd]
;W[dp]
;B[pp]
;W[dc]
;B[de]
;W[dh]
;B[fd]
;W[ee]
;B[ed]
;W[dd]
;B[df]
;W[ge]
;B[eb]
;W[ef]
;B[cd]
;W[cc]
;B[bd]
;W[bc]
;B[bf]
;W[db]
;B[ec]
;W[cg]
;B[cf]
;W[gd]
;B[gb]
;W[hb]
;B[ab]
;W[ea]
;B[fb]
;W[gc]
;B[bb]
;W[ga]
;B[fa]
;W[da]
;B[ib]
;W[hc]
;B[ha]
;W[fe]
;B[ac]
;W[fc]C[Black resigned here. Where is his main mistake? Show it please and suggest the right plan])