(;AB[oc]AB[ob]AB[mb]AB[mc]AB[nd]AB[md]AB[na]AB[kd]AB[lg]AB[lh]AB[kh]AB[jg]AB[hg]AB[hf]AB[he]AW[ne]AW[od]AW[pc]AW[qb]AW[qd]AW[pe]AW[of]AW[qf]AW[qe]AB[pf]AW[kg]AW[kf]AW[je]AW[jd]AW[jc]AW[kb]AW[hd]AW[gd]AW[qi]AB[ri]AB[hc]AW[ge]AB[ii]AB[gb]AW[gc]TR[mb]C[Kill the marked group]AP[goproblems]
(;W[kc]C[Yup!a bit ugly perhaps but very efficient.in the pro game black resigned here...RIGHT])
(;W[lb];B[lf];W[le];B[me];W[mf];B[ke])
(;W[lf];B[lb];W[la];B[kc];W[ld];B[jb])
(;W[la];B[lf];W[le];B[me];W[mf];B[ke])
(;W[me];B[lb];W[la];B[kc];W[ld];B[jb];W[ja];B[ib]C[No ko here if that was what you were thinking...])
(;W[le];B[lb];W[la];B[kc];W[ld];B[jb];W[ja];B[ib];W[lc];B[ia];W[ke];B[ma]C[Even if it were a ko it would be a very tough one and still wrong since there's no ko in the (much simpler) solution. ;)])
(;W[lc];B[lb];W[la];B[kc])
(;W[ke];B[lb];W[la];B[kc];W[ld];B[lc];W[le];B[jb];W[ja];B[ib])
(;W[ld];B[lb];W[la];B[kc]
(;W[ke];B[lc]
(;W[jb];B[le];W[lf];B[me])
(;W[le];B[jb];W[ja];B[ib]))
(;W[le];B[jb];W[ja];B[ib];W[lc];B[ia];W[ke];B[ma]C[Even if it were a ko it would be a very tough one and still wrong since there's no ko in the (much simpler) solution. ;)])))