(;GM[1]FF[4]CA[UTF-8]SZ[19]AB[rb][sb][qb][pb][oc][nb][rp][qp][pp][op][oq][nq][nr][rn][mr][cs][cr][cq][cp][co][bo][ao][bc][cd][dd][fc][gb][gc][bd][fe]AW[mb][nc][pc][nd][pd][oe][lc][rc][rd][qq][rq][pq][pr][or][ns][sp][an][bn][cn][dn][do][dp][dq][dr][ds][bb][cc][dc][ec][fb][fa]C[1: lower right, black to move
2: lower left, white to move
3: upper left, black to move
4: upper right, white to move](;B[ji];W[tt];B[rr](;W[rs];B[qs];W[sr];B[ss]C[Ko])(;W[sr];B[rs];W[qs];B[os]C[dood...]))(;B[jj];W[bq](;B[ar];W[br](;B[aq];W[bs]C[Seki])(;B[bs];W[aq]C[10000 year ko]))(;B[br];W[ar];B[bp];W[aq]TR[bs]C[White can play at the marked place and start a KO]))(;B[jk];W[tt];B[ba](;W[ab](;B[da];W[db];B[ga];W[eb];B[cb]C[Ko])(;B[cb];W[db];B[da];W[ea]C[No ko thanks to the extra liberty]TR[ed]))(;W[ca];B[ab]C[Ko])(;W[cb];B[ab]C[dood]))(;B[jl];W[ra](;B[na];W[ob];B[oa];W[qa]CR[ob]C[fake eye!])(;B[ob];W[na];B[oa];W[qa]C[dood....])))