optimal play can get black jigo
This is a silly problem- would never happen in a game
(;SZ[9]AB[ah]AB[ci]AW[bg]AW[cg]AW[dh]AW[df]AW[ce]AW[bf]AW[be]AW[bd]AW[cc]AW[dd]AW[de]AW[dc]AB[ag]AB[af]AB[ae]AB[ad]AB[bc]AB[bb]AB[ab]AW[cb]AB[ca]AW[ba]AB[da]AB[eb]AB[fe]AB[fc]AB[ge]AB[gf]AB[ih]AW[eh]AB[di]AW[hc]AW[hb]AB[gc]AW[ec]AB[fb]AW[hd]AW[he]AW[hf]AB[ei]AW[fh]AB[hg]AB[gg]AB[fi]AW[gh]AB[ef]AB[ed]AB[ee]AB[fg]AB[bi]AW[bh]AB[ga]AW[gb]AW[ha]AB[fa]C[black to play and get jigo. No prisoners yet]AP[goproblems]
(;B[gi]
(;W[db]
(;B[aa];W[gd];B[fd];W[hh];B[hi];W[if];B[ig]C[jigo...(remember blacks prisoner) white cannot capture blacks group because it has formed a ring of false eyesRIGHT])
(;B[gd];W[hh];B[hi];W[ea]
(;B[da];W[ca];B[ac];W[aa];B[ai];W[ch])
(;B[ac]C[good....but only 2 points]))
(;B[ea];W[gd];B[fd];W[hh];B[hi];W[if];B[ig]C[jigo!! black lives by forming a ring of false eyesRIGHT])))
(;B[gd];W[gi];B[ai];W[ch]C[you lose your lower stones])
(;B[db];W[gi]C[you lose your lower stones]))