(;C[B to kill the W stone.]AB[jj]AB[ki]AB[jg]AW[ji]AP[goproblems]
(;B[jh];W[ii])
(;B[kh];W[ii])
(;B[ij]
(;W[ii]C[CHOICE];B[hi];W[ih]
(;B[hh];W[ig]
(;B[hg];W[if])
(;B[if];W[hg]
(;B[hf];W[gg])
(;B[gg];W[hf]
(;B[gf];W[he])
(;B[he];W[gf]
(;B[ge];W[ff])
(;B[ff];W[ge];B[gd];W[ie]
(;B[fe];W[jf]
(;B[jh];W[hd])
(;B[hd];W[kg]))
(;B[jh];W[jf]
(;B[fe];W[hd])
(;B[hd];W[fe]))))))
(;B[hf];W[if]))
(;B[hg];W[hh];B[gh];W[gi];B[hj];W[gg];B[fh];W[ig];B[hf];W[if]
(;B[he])
(;B[ie];W[he];B[gf];W[je]
(;B[id];W[jf])
(;B[jf];W[id];B[jh];W[ie])))
(;B[ig];W[hh]))
(;W[ih]C[CHOICE]
(;B[jh];W[ii])
(;B[ii];W[jh])
(;B[hh];W[ig])
(;B[ig];W[hh])))
(;B[ii];W[jh]
(;B[ih]C[];W[kh]
(;B[kg];W[lh]C[W will escape.])
(;B[lh]C[good, ladder.RIGHT]))
(;B[kh]C[];W[ih]
(;B[hh]C[good, ladder.];W[ig]C[RIGHT])
(;B[ig];W[hh]C[White will escape.]))
(;B[kg];W[ih]C[W will escape now.])
(;B[ig];W[kh]C[W will escape now.]))
(;B[ih];W[ii];B[hi];W[ij];B[ik];W[hj];B[gj];W[hk];B[hl];W[jk])
(;B[hj];W[ii])
(;B[hi];W[ii]
(;B[hj];W[ij]
(;B[jk];W[ik])
(;B[ik];W[kj]
(;B[jh];W[jk];B[ih];W[jj]
(;B[il];W[li];B[kh];W[lj])
(;B[li];W[il];B[hk];W[jl]))
(;B[jk];W[kh];B[li];W[jh]
(;B[lh];W[kg])
(;B[lg];W[lh]
(;B[mi];W[mh])
(;B[mh];W[mi];B[lj];W[mg];B[nh];W[kg];B[kf];W[lf];B[ih];W[lg]))
(;B[kg];W[lh];B[mh];W[mi];B[lj];W[mg]))))
(;B[ij];W[ih]C[];B[hg];W[hh];B[gh];W[gi]
(;B[hj];W[gg];B[fh];W[ig];B[hf];W[if];B[ie];W[he];B[gf];W[je];B[id];W[jf])
(;B[ig];W[hj];B[jh];W[hi]
(;B[fi];W[hk])
(;B[hk];W[fi])))
(;B[ih];W[ij];B[ik];W[hj];B[gj];W[hk];B[hl];W[jk]))
(;B[on]))
kochi