(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[Blanc]PB[Noir]AW[do][fo][go][ho][dp][fp][ip][dq][fq][iq][er][ir][ds][is]AB[cn][cp][gp][cq][eq][gq][cr][dr][gr][gs]TR[gp][gq][gr][gs]C[Black to play : do your best to save the marked stones.]
(;B[es]
;W[fs]
(;B[fr]
;W[ep]
(;B[cs]C[RIGHT White cannot connect at E1, black connect unconditionally.])
(;B[es]CR[es]C[RIGHT In some circumtances, the move in E1 can be a better end-game move than the move in C1.]))
(;B[cs]
;W[fr]))
(;B[fr]
;W[es])
(;B[cs]
;W[es]))