(;AB[jp]AB[kq]AW[ip]AW[io]AW[kp]AW[ko]AW[jn]AB[lq]AB[mq]AB[nq]AW[mo]AW[np]AW[op]AW[hq]AW[jr]AB[iq]AB[ir]AW[gp]AB[dp]AB[cn]AB[oq]AW[pp]AW[or]AW[pr]AW[pq]AB[nr]TR[iq]TR[ir]TR[jp]TR[kq]TR[lq]TR[mq]TR[nq]TR[oq]TR[nr]C[White to kill all the marked stones UNCONDITIONALLY]AW[hp]AB[eq]AP[goproblems]
(;W[is]
(;B[jq]
(;W[hs]C[RIGHT])
(;W[hr]C[RIGHT]))
(;B[hr]C[CHOICE]
(;W[gr]
(;B[jq];W[hs]C[RIGHT])
(;B[hs]C[CHOICE]
(;W[js];B[jq])
(;W[jq];B[js]
(;W[jo]C[RIGHT])
(;W[kr];B[lr];W[jo]C[RIGHT]))))
(;W[jq];B[gr]C[])))
(;W[jq];B[js]
(;W[kr];B[lr];W[jo];B[ks];W[jp];B[gr];W[hr];B[hs];W[fr];B[fq];W[gq];B[fs]C[Ko])
(;W[jo];B[kr]
(;W[jp];B[gr];W[hr];B[hs];W[fr];B[fq];W[gq];B[fs]C[Ko])
(;W[hr];B[jp];W[jq];B[ls])))
(;W[hr];B[js]
(;W[ks];B[is]
(;W[kr];B[lr])
(;W[jq];B[kr];W[jq];B[ls]))
(;W[hs];B[kr])
(;W[jq];B[kr];W[jq];B[ls])
(;W[kr];B[lr];W[ks];B[is])
(;W[ms];B[ns];W[ks];B[is]
(;W[kr];B[lr])
(;W[lr];B[kr])
(;W[jq];B[kr])))
(;W[kr];B[jq]
(;W[hr];B[lr])
(;W[lr];B[gr]))
(;W[hs];B[js]
(;W[is];B[hr]
(;W[ks];B[gr])
(;W[gs];B[gr])
(;W[gr];B[gs]))
(;W[kr];B[lr]
(;W[ks];B[is])
(;W[is];B[jq]))
(;W[ks];B[is]))
(;W[ns];B[jq]
(;W[ms];B[gr])
(;W[ls];B[gr])
(;W[hr];B[ms]
(;W[lr];B[kr])
(;W[kr];B[lr])
(;W[is];B[kr];W[js];B[ks];W[hs];B[lr])
(;W[ls];B[os]
(;W[is];B[kr]
(;W[js];B[ks];W[hs];B[lr])
(;W[ks];B[lr]))
(;W[lr];B[kr])
(;W[kr];B[lr])
(;W[ks];B[kr];W[is];B[lr]))))
(;W[ls];B[jq];W[ns];B[gr])
(;W[ms];B[jq];W[ns];B[gr]))