(;AB[jc]AB[md]AB[nd]AB[oc]AB[pc]AB[rc]AB[qc]AW[ld]AW[le]AW[me]AW[ne]AW[od]AW[pd]AW[qd]LB[ld:1]AB[gc]C[Black to keep K17 and P17 connected in the best way after white 1.]AW[jf]AB[ge]AW[qf]AP[goproblems]
(;B[lb]
(;W[lc]
(;B[mb];W[mc];B[nc];W[kb];B[kc]C[RIGHT])
(;B[kb];W[mb];B[nb];W[ma]))
(;W[kb]
(;B[kc];W[lc];B[mb];W[mc];B[nc]C[RIGHT])
(;B[lc];W[kc];B[kd];W[mc])))
(;B[lc];W[mc]
(;B[nc];W[kc]
(;B[mb];W[kb];B[kd];W[jd];B[jb];W[ka])
(;B[lb];W[kb]))
(;B[lb];W[nc];B[nb]C[No need to give these two stones.]))
(;B[mb];W[lb]
(;B[kb];W[lc];B[la]C[Connected, but fewer points than in the best path, and white has many ko threats (O17, O18, ...).])
(;B[lc];W[kc];B[kb];W[mc];B[nc];W[jb];B[lc];W[ka]))
(;B[kb];W[lb]
(;B[mb];W[lc];B[la]C[Connected, but fewer points than in the best path, and white has many ko threats (O17, O18, ...).])
(;B[lc];W[mc]
(;B[mb];W[kc];B[la];W[nc];B[nb];W[jb])
(;B[nc];W[kc];B[mb];W[jb];B[lc];W[ka]))))