(;AW[jq]AW[kp]AW[kq]AW[kr]AW[ip]AW[io]AW[ho]AW[gp]AW[hq]AW[hr]AB[ir]AB[jr]AB[ks]AB[lr]AB[lq]AB[lp]AB[mo]AB[mn]AW[ln]AW[kn]AW[jn]AB[jm]AB[km]AB[lm]AB[ml]AB[nm]AB[in]AB[hn]AB[gn]AB[fn]AB[fo]AB[fp]AB[fq]AB[fr]AW[hm]AW[im]AW[il]AW[jl]AW[dr]AW[cq]AB[cp]AB[dp]AB[ep]AW[bp]AW[co]AW[dn]AW[dq]AB[er]AW[br]AW[gl]AW[fl]AW[dl]AW[dm]C[Where should white play?]AW[hs]AB[ls]AB[iq]AP[goproblems]
(;W[js];B[ko]
(;W[jp];B[gq]
(;W[is]C[RIGHT])
(;W[go];B[lo]
(;W[jo];B[hp])
(;W[is];B[jo]C[There was no need to give up those stones. Now the F4 group lives.]))
(;W[jo];B[lo]
(;W[go];B[hp])
(;W[is]C[RIGHT]))
(;W[lo];B[jo]C[There was no need to give up those stones. Now the F4 group lives.]))
(;W[jo];B[jp])
(;W[lo];B[jp])
(;W[is];B[jo]C[There was no need to give up those stones. Now the F4 group lives.])
(;W[go];B[jp])
(;W[gq];B[jp]))
(;W[is];B[js])
(;W[jo];B[js]
(;W[lo]C[RIGHT])
(;W[go];B[lo])
(;W[gq];B[lo]))
(;W[lo];B[jo]
(;W[ko];B[jp])
(;W[jp];B[js])
(;W[go];B[js])
(;W[gq];B[js])
(;W[js];B[ko]C[There was no need to give up those stones. Now the F4 group lives.])
(;W[is];B[js]))
(;W[ko];B[js]
(;W[go];B[gq])
(;W[gq];B[go]))
(;W[jp];B[js])
(;W[go];B[js]
(;W[gq];B[ko])
(;W[ko];B[gq])
(;W[jo];B[lo])
(;W[lo];B[jo]))
(;W[gq];B[js]
(;W[ko];B[go])
(;W[go];B[ko])
(;W[jo];B[lo])
(;W[lo];B[jo])))
maba