(;AW[cb]AW[cc]AW[ba]AB[ab]AB[bb]AB[bc]AB[bd]AB[ca]AB[da]AB[db]AB[dc]AB[ec]AB[eb]AB[ea]AB[fa]AB[fb]AB[fd]AB[gd]AB[gc]AB[ff]AB[fg]AB[gg]AB[hg]AB[ig]AB[if]AB[ie]AB[id]AW[gb]AW[hb]AW[hc]AW[hf]AW[hd]AW[he]AW[ic]AW[dd]AW[ed]AW[ef]AW[eg]AW[eh]AW[fh]AW[hh]AW[gh]AW[ih]AW[jh]AW[jg]AW[jf]AW[je]AW[jd]AW[kc]AW[kb]AW[lb]AW[ma]AW[na]AB[ga]AB[ha]AB[ia]AB[ib]AB[ja]AB[jb]AB[jc]AB[ka]AB[la]AB[mb]AB[nb]AB[ob]AB[kd]AB[md]AB[mf]AB[ke]AB[kf]AB[kh]AB[ki]AB[ji]AB[ii]AB[ce]AB[de]AB[dg]AB[df]AB[dh]AB[di]AB[ei]AB[fi]AB[gi]AB[hi]C[Black to play and kill all white stones]AP[goproblems]
(;B[ee];W[fc]
(;B[fb]
(;W[eb]
(;B[ec]
(;W[fa]
(;B[fc];W[dc]
(;B[da]
(;W[la]
(;B[ja]
(;W[ia]
(;B[jb]
(;W[jc];B[ga]C[CHOICERIGHT])
(;W[ga];B[jc]C[CHOICERIGHT]))
(;B[ga];W[jb]))
(;W[jb];B[ia]C[RIGHT])
(;W[ga];B[ia]C[RIGHT]))
(;B[jb];W[ja]
(;B[ia];W[jc])
(;B[jc];W[ib])
(;B[ga];W[ha]))
(;B[ia];W[ja]
(;B[jb];W[jc])
(;B[jc];W[jb])
(;B[ga];W[ha]))
(;B[ga];W[ja])
(;B[jc];W[jb]))
(;W[ga];B[ia]
(;W[ja];B[la];W[ib];B[jc]C[RIGHT])
(;W[la];B[ja]C[RIGHT]))
(;W[jb];B[ia]C[RIGHT]))
(;B[jc];W[jb]
(;B[da];W[la])
(;B[ia];W[ca]))
(;B[jb];W[jc]
(;B[da];W[ja])
(;B[ga];W[ea])
(;B[la];W[ca]))
(;B[kg];W[jc]
(;B[da];W[ga])
(;B[ga];W[ea])
(;B[la];W[ca])))
(;B[db];W[fc])
(;B[dc];W[fc])
(;B[jc];W[jb])
(;B[jb];W[jc])
(;B[kg];W[jc]))
(;W[ea]C[This is a trick move.]
(;B[fc]C[];W[fa];B[dc]C[The remainder is similar to the main line, so I do not enter the variations here.RIGHT])
(;B[fa];W[ga];B[ia];W[fc];B[fb];W[dc];B[fc];W[fa])))
(;B[fa];W[ec]))
(;W[ec];B[eb]C[RIGHT]))
(;B[ec];W[fb])
(;B[eb];W[fb])
(;B[jb];W[jc])
(;B[jc];W[jb])
(;B[kg];W[jc]))
(;B[cd];W[fe])
(;B[lc];W[fe])
(;B[oa];W[fe])
(;B[aa];W[fe])
(;B[fc];W[fe])
(;B[fe];W[fc])
(;B[ge];W[fc])
(;B[gf];W[fc])
(;B[kg];W[fc]))