Looking through the ladder section of goproblems.com, I missed a GP ("GoProblems") ladder?! So, here is a first try...
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.50]
AW[cb][db][ac][bc][kh][li][ql][mn][do][po][cq][dq][gq][rq][ar][er][fr][qr][qs]AB[aa][ba][da][ab][bb][bd][cd][dd][ae][af][cf][df][ag][dg][kg][bh][ch][lh][kk][bm][bo][mo][no][oo][fp][mp][pp][eq][fq][mq][pq][cr][dr][mr][nr][or][rr][sr][ms][rs][ss]TR[cr][dr]C[How can Black save the marked stones?]
(;B[bq]CR[bq]
(;W[br]CR[br]
(;B[dp]CR[dp]
;W[cp]CR[cp]
;B[co]CR[co]
;W[ep]CR[ep]
;B[bp]CR[bp]
;W[dp]CR[dp]
;B[dn]CR[dn]
;W[eo]CR[eo]
(;B[fo]CR[fo]
;W[en]CR[en]
;B[em]CR[em]
;W[fn]CR[fn]
;B[gn]CR[gn]
;W[fm]CR[fm]
;B[fl]CR[fl]
;W[gm]CR[gm]
;B[hm]CR[hm]
;W[gl]CR[gl]
;B[gk]CR[gk]
;W[hl]CR[hl]
;B[il]CR[il]
;W[hk]CR[hk]
;B[hj]CR[hj]
;W[ik]LB[ij:B][jk:A]CR[ik]C[ A or B? Please choose carefully!]
(;B[jk]CR[jk]
;W[ij]CR[ij]
;B[ii]CR[ii]
;W[jj]LB[ji:B][kj:A]CR[jj]C[Again, A or B? If you haven't read a little further ahaed on your own, please play A, things will be clarer that way.]
(;B[kj]CR[kj]
;W[ji]LB[jh:A][ki:B]CR[ji]C[The turning point. A will send the ladder to the bottom, B to the top. Only one move works!]
(;B[ki]CR[ki]
;W[jh]CR[jh]
;B[ih]CR[ih]
;W[jg]CR[jg]
;B[jf]CR[jf]
;W[ig]CR[ig]
;B[hg]CR[hg]
;W[if]CR[if]
;B[ie]CR[ie]
;W[hf]CR[hf]
;B[gf]CR[gf]
;W[he]CR[he]
;B[hd]CR[hd]
;W[ge]CR[ge]
;B[fe]CR[fe]
;W[gd]CR[gd]
;B[gc]CR[gc]
;W[fd]CR[fd]
(;B[ed]CR[ed]
;W[fc]CR[fc]
;B[fb]CR[fb]
;W[ec]CR[ec]
(;B[eb]CR[eb]
;W[dc]CR[dc]
;B[cc]CR[cc]
;W[ca]CR[ca]
;B[bb]CR[bb]
;W[ea]CR[ea]
;B[ba]LB[mi:b][lj:w][mj:w][nj:b][lk:b][mk:w][nk:w][ok:b][ml:b][nl:w][ol:w][pl:b][nm:b][om:w]CR[ba]C[As usual, Go saves the day. Those of you who sent the ladder in the other direction (marked) shouldn't be too surprised that this leads to problems only.... RIGHT])
(;B[dc]CR[dc]
;W[eb]CR[eb]))
(;B[fc]CR[fc]
;W[ed]CR[ed]
(;B[ee]CR[ee]
;W[ec]CR[ec]
;B[eb]CR[eb]
;W[dc]CR[dc]
;B[cc]CR[cc]
;W[ca]CR[ca]
;B[bb]CR[bb]
;W[ea]CR[ea]
;B[ba]CR[ba]
;W[fb]LB[fc:A]CR[fb]C[B A was careless!])
(;B[ec]CR[ec]
;W[ee]CR[ee])))
(;B[jh]CR[jh]
;W[ki]CR[ki]
;B[mi]CR[mi]
;W[lj]LB[mj:B][lk:A]TR[mn]CR[lj]C[And a last 'A or B': The marked stone should help you with your decision...?!]
(;B[lk]CR[lk]
;W[mj]CR[mj]
;B[nj]CR[nj]
;W[mk]CR[mk]
;B[ml]CR[ml]
;W[nk]CR[nk]
;B[ok]CR[ok]
;W[nl]CR[nl]
;B[nm]CR[nm]
;W[ol]CR[ol]
;B[pl]CR[pl]
;W[om]CR[om]
;B[pm]CR[pm]
;W[on]CR[on]
(;B[nn]CR[nn]
;W[pn]CR[pn]
;B[qn]CR[qn]
;W[qo]CR[qo]
;B[ro]CR[ro]
;W[qp]CR[qp]
;B[qq]CR[qq]
;W[rp]CR[rp]
;B[sp]CR[sp]
;W[sq]CR[sq]
;B[rr]CR[rr]
;W[so]CR[so]
;B[sr]CR[sr]
;W[rn]CR[rn]C[Problems causes problems.....])
(;B[pn]CR[pn]
;W[nn]CR[nn]))
(;B[mj]CR[mj]
;W[lk]CR[lk]
;B[ll]CR[ll]
;W[mk]CR[mk]
;B[nk]CR[nk]
;W[ml]CR[ml]
;B[mm]CR[mm]
;W[nl]CR[nl]
;B[ol]CR[ol]
;W[nm]CR[nm])))
(;B[ji]CR[ji]
;W[kj]CR[kj]
;B[lj]CR[lj]
;W[ki]CR[ki]
;B[mi]CR[mi]
;W[jh]CR[jh]
;B[ih]CR[ih]
;W[jg]CR[jg]
;B[jf]CR[jf]
;W[ig]CR[ig]
;B[hg]CR[hg]
;W[if]CR[if]
;B[ie]CR[ie]
;W[hf]CR[hf]
;B[gf]CR[gf]
;W[he]CR[he]
;B[hd]CR[hd]
;W[ge]CR[ge]
;B[fe]CR[fe]
;W[gd]CR[gd]
;B[gc]CR[gc]
;W[fd]CR[fd]
(;B[fc]CR[fc]
;W[ed]CR[ed]
;B[ee]CR[ee]
;W[ec]CR[ec]
;B[eb]CR[eb]
;W[dc]CR[dc]
;B[cc]CR[cc]
;W[ca]CR[ca]
;B[bb]CR[bb]
;W[ea]CR[ea]
;B[ba]CR[ba]
;W[fb]LB[fc:A]CR[fb]C[B A was careless!])
(;B[ed]CR[ed]
;W[fc]CR[fc]
;B[fb]CR[fb]
;W[ec]CR[ec]
;B[eb]CR[eb]
;W[dc]CR[dc]
;B[cc]CR[cc]
;W[ca]CR[ca]
;B[bb]CR[bb]
;W[ea]CR[ea]
;B[ba]LB[mj:w][nj:b][mk:w][nk:w][ok:b][ml:b][nl:w][ol:w][pl:b][nm:b][om:w]CR[ba]C[As usual, Go saves the day. Those of you who sent the ladder in the other direction (marked) shouldn't be too surprised that this leads to problems only... RIGHT])))
(;B[ij]CR[ij]
;W[jk]CR[jk]
;B[jl]CR[jl]
;W[jj]CR[jj]
;B[ji]CR[ji]
;W[kj]CR[kj]
;B[lj]CR[lj]
;W[ki]CR[ki]
;B[mi]CR[mi]
;W[jh]CR[jh]))
(;B[en]CR[en]
;W[fo]CR[fo])
(;B[fn]CR[fn]
;W[cs]CR[cs]))
(;B[cp]CR[cp]
;W[dp]CR[dp]))
(;W[bp]CR[bp]
;B[br]CR[br]
;W[cp]CR[cp]
;B[ap]CR[ap]))
(;B[br]CR[br]
;W[bq]CR[bq])
(;B[dp]CR[dp]
;W[bq]CR[bq]))