(;AB[fb]AB[gb]AB[hb]AB[ib]AB[jb]AB[kc]AB[jc]AB[lc]AB[mb]AB[nb]AW[la]AW[lb]AW[oa]AW[ob]AW[nc]AW[mc]AW[oc]AW[ld]AW[kd]AW[jd]AW[ic]AW[hc]AW[gc]AW[fc]AB[fa]AW[ea]AW[eb]AW[ec]C[Can White kill Black entirely? Play at H16 if you think not.FORCE]LB[hd:No way!]AP[goproblems]
(;W[kb];B[ja]
(;W[ha];B[ka]
(;W[ma]C[Under the stones !RIGHT]TR[lb])
(;W[na];B[ma])
(;W[ia];B[ma])
(;W[ga];B[ma]))
(;W[ma];B[ha])
(;W[na];B[ha]))
(;W[ma];B[ka]
(;W[na];B[kb])
(;W[kb];B[na];W[lb];B[kb]MA[ga]MA[ja]C[Black lives.])
(;W[ha];B[ia])
(;W[ia];B[kb]
(;W[na];B[ha])
(;W[ha];B[na]))
(;W[ja];B[kb]))
(;W[na];B[ka]
(;W[ma];B[kb])
(;W[ha];B[ia])
(;W[ia];B[kb]
(;W[ma];B[ha])
(;W[ha];B[ma]))
(;W[ja];B[kb]))
(;W[ha];B[ka]
(;W[ma];B[ia])
(;W[kb];B[ma])
(;W[ia];B[kb])
(;W[na];B[ia])
(;W[ja];B[kb]))
(;W[ia];B[ka]
(;W[ha];B[kb])
(;W[ma];B[kb]
(;W[na];B[ha])
(;W[ha];B[na]))
(;W[na];B[kb]
(;W[ma])
(;W[ha];B[ma])))
(;W[ja];B[kb]
(;W[ma];B[ka])
(;W[na];B[ka])
(;W[ka];B[ia])
(;W[ha];B[ka])
(;W[ia];B[ka]))
(;W[ka];B[ja]
(;W[ma];B[ha])
(;W[ha];B[kb])
(;W[na];B[ha]))
(;W[hd]AB[ea]AB[eb]AB[ec]AB[fc]AB[gc]AB[hc]AB[ic]AB[jd]AB[kd]AB[ld]AB[lb]AB[la]AB[mc]AB[nc]AB[oc]AB[ob]AB[oa]AW[fa]AW[fb]AW[gb]AW[hb]AW[ib]AW[jb]AW[jc]AW[kc]AW[lc]AW[mb]AW[nb];B[kb]C[Then if we switch sides and Black plays here, what will you do?]
(;W[ja];B[ha];W[ka];B[ma];W[na];B[lb]C[Whoopsee.])
(;W[ha];B[ja])
(;W[ia];B[na])
(;W[ka];B[ja];W[ia];B[na]))
(;W[ga];B[ka]))