(;AB[ls]AB[ks]AB[ms]AB[lr]AB[lq]AB[lp]AB[lo]AB[ln]AW[kr]AW[kq]AW[jq]AW[iq]AW[kp]AW[ko]AW[kn]AB[jp]AW[in]AW[io]AW[ho]AW[hp]AW[gp]AW[gn]AW[hm]AB[il]AB[km]AB[kl]AB[kk]AB[kj]AW[jk]AW[ik]AW[jj]AB[ji]AB[ij]AW[ii]AW[hi]AW[gj]AW[fj]AB[gk]AB[gl]AW[fk]AB[fl]AB[el]AB[em]AB[go]AB[fn]AB[fp]AB[ep]AB[dp]AB[do]AB[dn]AW[en]AB[gq]AB[hq]AB[ir]AB[jr]AB[hr]AB[ki]C[can black attack the big white group in the middle?]AP[goproblems]
(;B[im];W[fo]
(;B[gm];W[fm]
(;B[hl]
(;W[fn]C[CHOICE]
(;B[hn]C[koRIGHT])
(;B[jn];W[jo];B[hn]C[RIGHT]))
(;W[hn]C[CHOICE]
(;B[fn]C[koRIGHT])
(;B[jn];W[jo];B[fn]C[RIGHT])))
(;B[eo];W[fn])
(;B[hk];W[fn])
(;B[jn];W[jo];B[fn]C[koRIGHT]))
(;B[hl];W[gm])
(;B[fm];W[gm])
(;B[eo];W[gm];B[go]C[koRIGHT])
(;B[jn];W[jo]
(;B[gm]C[koRIGHT])
(;B[eo];W[gm];B[go]C[koRIGHT])
(;B[fm];W[gm])
(;B[hl];W[gm])))
(;B[hl];W[fo]
(;B[eo];W[go]
(;B[gm];W[im])
(;B[im];W[gm]))
(;B[gm];W[im])
(;B[im];W[gm]))
(;B[fo];W[im];B[gm];W[jl]
(;B[hl];W[jm])
(;B[jm];W[hl]))
(;B[gm];W[im]
(;B[fo];W[jl]
(;B[hl];W[jm])
(;B[jm];W[hl]))
(;B[hl];W[fo])
(;B[jl];W[fo]))
(;B[hk];W[fo])
(;B[jl];W[fo])
(;B[jm];W[fo])
(;B[fm];W[fo])
(;B[jn];W[jo]
(;B[im];W[fo]
(;B[gm]C[koRIGHT])
(;B[fm];W[gm]))
(;B[jm];W[fo])
(;B[gm];W[im])
(;B[fo];W[jm])
(;B[jl];W[im])))