This one is similar to #8542 in the database - but with a twist!
(;AW[cr]AB[dr]AB[dq]AW[dp]AB[ep]AW[cp]AW[fn]AW[gn]AW[hn]AB[gp]AB[hp]AB[fr]AW[gr]AW[hq]AB[js]AB[ks]AW[jp]AW[jq]AW[jr]AW[io]AW[br]AW[en]AB[lp]AB[lr]AW[bp]C[Black to save the bulk of his stones]AW[cn]AP[goproblems]
(;B[ir]
(;W[iq]
(;B[hr]
(;W[is]
(;B[hs];W[gs];B[gq];W[is]
(;B[eq]C[Yes, that's the vital point!]
(;W[hr]C[CHOICE]
(;B[fs]C[RIGHT])
(;B[ds]C[RIGHT])
(;B[es]C[RIGHT])
(;B[cs];W[es]))
(;W[es]C[CHOICE];B[fs]
(;W[ds]C[CHOICE];B[hr]C[RIGHT])
(;W[hr]C[CHOICE];B[ds]C[RIGHT])))
(;B[fs];W[eq]
(;B[hr];W[fp]
(;B[er];W[ds];B[hs];W[ir])
(;B[hs];W[ir];B[er];W[ds]))
(;B[fo];W[eo];B[fq];W[hr];B[er];W[go];B[ds];W[fp]C[Ko is a bit poor for black])
(;B[fq];W[fo];B[hr];W[fp];B[hs];W[ir];B[ds];W[er];B[es];W[eq]))
(;B[fo];W[fq];B[eq];W[es])
(;B[hr];W[eq];B[fq];W[fo];B[fs];W[fp];B[hs];W[ir];B[ds];W[er];B[es];W[eq])
(;B[ds];W[eq];B[fs];W[fp];B[hr];W[er]))
(;B[gq];W[hs];B[eq];W[es])
(;B[fs];W[gq];B[fq];W[fo]))
(;W[gq]C[This path is for informational purposes only. The computer will not choose it!];B[gs];W[fq];B[eq]C[];W[fp];B[ds]C[The white gains are negligibleRIGHT]))
(;B[gs];W[hs];B[fs];W[gq];B[fq]C[It is dead as it stands])
(;B[fq];W[gq];B[fs];W[hr];B[ds];W[er]))
(;W[hr]C[This path is for informational purposes only. The computer will not choose it!];B[iq];W[ip];B[is];W[fq]
(;B[gq];W[er];B[fp];W[fs];B[ds]C[Black wins without koRIGHT])
(;B[gs]))
(;W[fq]C[This path is for informational purposes only. The computer will not choose it!RIGHT];B[gq]
(;W[hr];B[iq];W[ip];B[is];W[er];B[fp];W[fs];B[ds]C[Black wins without koRIGHT])
(;W[er];B[fp];W[fs];B[ds]
(;W[iq];B[hr];W[es];B[eq];W[hs];B[is]C[RIGHT])
(;W[hr];B[iq];W[es]
(;B[eq];W[ip];B[is];W[hs];B[fr]C[If you are not afraid of the 6-step ko!RIGHT])
(;B[hs];W[eq];B[is];W[cq];B[gs]C[If you are afraid of the 6-step ko!RIGHT]))))
(;W[gq]C[This path is for informational purposes only. The computer will not choose it!];B[iq];W[fq];B[fp]
(;W[eq];B[er]C[RIGHT])
(;W[er];B[eq]C[RIGHT])))
(;B[hs];W[gs];B[hr];W[ir];B[is];W[gq])
(;B[gq];W[hr]
(;B[eq];W[es])
(;B[fo];W[fq];B[fs];W[ds]))
(;B[fo];W[fq];B[gq];W[hr];B[fs];W[ds])
(;B[hr];W[ir];B[hs];W[gs];B[is];W[gq])
(;B[gs];W[hs];B[fs];W[fo];B[gq];W[hr];B[fp];W[ds])
(;B[fq];W[fo];B[ir];W[iq];B[hr];W[gs]))