(;SZ[19]AW[qj]AW[ql]AW[pm]AW[on]AW[qn]AW[oo]AW[ro]AW[op]AW[sp]AW[oq]AW[pq]AW[qq]AW[sq]AW[or]AB[pn]AB[po]AB[pp]AB[qp]AB[rp]AB[rq]AB[pr]AB[qr]AB[rr]AB[ps]C[Black to live]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[6.50]
(;B[rn]
(;W[qo]C[CHOICE]
(;B[sr]
(;W[rs]
(;B[so];W[qm];B[sp]C[RIGHT])
(;B[sn];W[qm];B[so];W[sp])
(;B[rm];W[qm]))
(;W[so];B[rs]C[RIGHT]))
(;B[sn];W[rs]
(;B[sr];W[qm];B[so];W[sp])
(;B[so];W[qm];B[sr];W[sp]))
(;B[rs];W[sr]
(;B[ss];W[so])
(;B[sn];W[so])))
(;W[rm]C[CHOICE]
(;B[sr];W[so]
(;B[rs]C[RIGHT])
(;B[qo];W[sn];B[rs]C[RIGHT]))
(;B[sn];W[sm]
(;B[sr];W[rs]
(;B[so];W[sp])
(;B[qo];W[so]))
(;B[rs];W[sr])
(;B[qo];W[so]))
(;B[qo];W[sn]
(;B[sr];W[rs])
(;B[rs];W[sr]))
(;B[so];W[sn]
(;B[sr];W[rs])
(;B[rs];W[sr])))
(;W[sn]C[CHOICE]
(;B[sr];W[rs]
(;B[so];W[sp]
(;B[rm];W[qm]
(;B[sm];W[qo]
(;B[so];W[rl])
(;B[sq];W[so]))
(;B[qo];W[rl]
(;B[sq];W[sm])
(;B[so]C[Ko])))
(;B[qo];W[rm]))
(;B[rm];W[qm]
(;B[qo]C[RIGHT])
(;B[sm];W[qo];B[so];W[sp])
(;B[so];W[sp]
(;B[sm];W[qo]
(;B[so];W[rl])
(;B[sq];W[so]))
(;B[qo];W[rl]
(;B[sq];W[sm])
(;B[so]C[Ko]))))
(;B[qo];W[rm]))
(;B[rm];W[qm]
(;B[qo];W[rl]
(;B[sr];W[sm]
(;B[so];W[sp];B[rs]C[RIGHT])
(;B[rs]C[RIGHT]))
(;B[rs];W[sr];B[ss];W[sm];B[so];W[sp];B[sq]C[RIGHT])
(;B[so]C[I take it that you are aware that it is not a ko for life at all because Black can live unconditionally by playing T2 or even S1 if White retakes this ko. In that case; well done.RIGHT]))
(;B[sr];W[rs]
(;B[qo]C[RIGHT])
(;B[sm];W[qo];B[so];W[sp])
(;B[so];W[sp]))
(;B[rs];W[sr];B[qo];W[os];B[so]C[Ko]))
(;B[qo];W[rm]
(;B[sr];W[rs])
(;B[rs];W[sr]))
(;B[rs];W[sr]
(;B[qo];W[rm])
(;B[rm];W[qm];B[qo];W[os];B[so]C[Ko]))))
(;B[sr];W[rs]
(;B[rn]
(;W[sn]
(;B[rm];W[qm]
(;B[qo]C[RIGHT])
(;B[sm];W[qo];B[so];W[sp])
(;B[so];W[sp]))
(;B[so];W[sp]
(;B[rm];W[qm]
(;B[sm];W[qo]
(;B[so];W[rl])
(;B[sq];W[so]))
(;B[qo];W[rl]
(;B[sq];W[sm])
(;B[so]C[Ko])))
(;B[qo];W[rm])))
(;W[rm]
(;B[so];W[sn];B[sp]C[RIGHT])
(;B[sn];W[sm]
(;B[so];W[sp])
(;B[qo];W[so]))
(;B[qo];W[sn])))
(;B[so];W[sp]
(;B[rn];W[sn]
(;B[rm];W[qm]
(;B[sm];W[qo]
(;B[so];W[rl])
(;B[sq];W[so]))
(;B[qo];W[rl]
(;B[sq];W[sm])
(;B[so]C[Ko])))
(;B[qo];W[rm]))
(;B[qo];W[rn])
(;B[sn];W[rn]))
(;B[qo];W[rn])))