(;C[Black to do something.]AB[ic]AB[nc]AB[nd]AB[pd]AB[ld]AB[le]AB[kf]AB[jg]AB[ig]AB[hg]AB[gf]AB[ff]AB[ee]AB[dd]AB[cd]AB[cc]AW[db]AW[dc]AW[fc]AW[fe]AW[ge]AW[hd]AW[hf]AW[if]AW[jf]AW[kd]AW[ke]AW[lc]AW[mc]AP[goproblems]
(;B[je];W[jd];B[id];W[ie];B[kc];W[jc];B[kb];W[jb])
(;B[jb];W[kc])
(;B[kb];W[kc])
(;B[kc];W[jc]
(;B[kb];W[jb];B[jd];W[je];B[id];W[lb];B[he];W[ka]
(;B[ie];W[kc]
(;B[gd];W[fd]
(;B[gc];W[gb];B[hc];W[ib])
(;B[hc];W[gb]
(;B[gc];W[hb])
(;B[hb];W[gc])))
(;B[fd];W[gd];B[gc];W[ed];B[hc];W[fd];B[fb];W[ec]
(;B[cb]C[Black should throw-in at L17 for the best result.RIGHT]TR[kc])
(;B[eb]TR[kc]C[Black should throw-in at L17 for the best result.RIGHT]))
(;B[hc];W[gc];B[gd];W[fd]))
(;B[kc];W[kb];B[ie];W[kc];B[fd];W[gd]C[CHOICE];B[gc];W[ed];B[hc];W[fd];B[fb];W[ec]
(;B[cb]C[RIGHT])
(;B[eb]C[RIGHT])))
(;B[jd];W[kb];B[je];W[kc];B[id];W[he]
(;B[ib];W[hc];B[hb];W[gb])
(;B[hc];W[gc]
(;B[ib];W[gb])
(;B[hb];W[gb])
(;B[gb];W[ib];B[hb];W[fb]))
(;B[hb];W[hc];B[ib];W[gb])))
(;B[jc];W[kc]))