(;AB[aa]AB[ba]AB[ca]AB[db]AB[cb]AB[dc]AB[ea]AB[fa]AB[ga]AB[gb]AB[fb]AB[fc]AB[gc]AB[gd]AB[fe]AB[ff]AB[fg]AB[hb]AB[ia]AB[jb]AB[kb]AB[kc]AB[lc]AB[he]AB[hf]AB[if]AB[ig]AB[ih]AB[ii]AB[gh]AB[hh]AB[af]AB[ae]AB[bf]AB[cf]AB[ce]AB[df]AB[dg]AB[dh]AB[di]AB[dj]AB[dk]AB[ei]AB[ej]AB[el]AB[fk]AB[fl]AB[gk]AB[gj]AB[hj]AB[ag]AB[bh]AB[ai]AB[ci]AB[bj]AB[cj]AW[bb]AW[ac]AW[cc]AW[ad]AW[bd]AW[be]AW[cd]AW[dd]AW[ed]AW[ec]AW[eb]AW[fd]AW[ee]AW[de]AW[ef]AW[eg]AW[eh]AW[fh]AW[fi]AW[fj]AW[gi]AW[hi]AW[ge]AW[hd]AW[ic]AW[hc]AW[ib]AW[jc]AW[kd]AW[jd]AW[ld]AW[md]AW[ie]AW[jf]AW[jg]AW[kg]AW[ij]AW[ik]AW[hk]AW[ji]AW[gl]AW[fm]AW[em]AW[hm]AB[gm]AB[gn]AB[go]AB[gp]AB[fn]AB[en]AB[dn]AB[cn]AB[bn]AB[bm]AW[mc]AW[lb]AW[la]MA[ac]MA[ad]MA[bd]MA[be]MA[bb]MA[cc]MA[cd]MA[dd]MA[de]MA[ee]MA[ed]MA[ec]MA[eb]MA[fd]MA[ef]MA[eg]MA[eh]MA[fh]MA[fi]MA[fj]MA[gi]MA[hi]C[white to save his marked stones]AW[jj]AW[ke]AP[goproblems]
(;W[gg];B[gf]
(;W[jh];B[da];W[ja];B[ab]
(;W[ka];B[bc])
(;W[ha];B[bc]))
(;W[ja];B[da]
(;W[ha];B[ge]
(;W[jh];B[ia]
(;W[dl];B[dm];W[ha];B[jo];W[ia]C[well done! sekiRIGHT])
(;W[ka];B[ab]))
(;W[ia];B[ab]C[black can play a18]))
(;W[jh];B[ab]))
(;W[ka];B[da]
(;W[jh];B[ab])
(;W[ja];B[ab])))
(;W[ab];B[bc]C[oooooooops!!!!!!!!])
(;W[ja];B[gf]
(;W[ha];B[da]
(;W[jh];B[ia]
(;W[dl];B[dm];W[ha];B[ge]
(;W[gg];B[ia]C[white doesn't have ko threat any more.Black can play a 18 and white is died])
(;W[hg]C[NOTTHIS]))
(;W[gg];B[ab]
(;W[ka];B[bc])
(;W[ha];B[bc]))
(;W[hg];B[ab]))
(;W[ia];B[ge]
(;W[hg]C[NOTTHIS];B[ab])
(;W[gg];B[ab]C[black can play a18])
(;W[jh];B[ab])))
(;W[jh];B[da];W[ha];B[ge]
(;W[gg];B[ia]
(;W[dl];B[dm];W[ha];B[jo];W[ia]C[well done! sekiRIGHT])
(;W[ka];B[ab]))
(;W[hg]C[NOTTHIS];B[ia];W[dl];B[dm];W[ha];B[jo];W[ia]C[well done! sekiRIGHT])
(;W[ia];B[ab]))
(;W[gg];B[da]
(;W[ha];B[ge]
(;W[jh];B[ia]
(;W[dl];B[dm];W[ha];B[jo];W[ia]C[well done! sekiRIGHT])
(;W[ka];B[ab]))
(;W[ia];B[ab]C[black can play a18]))
(;W[jh]))
(;W[hg]C[NOTTHIS]))
(;W[gf];B[gg]
(;W[ge];B[da]
(;W[ja];B[gf];W[ha];B[ge]
(;W[jh];B[ia];W[dl];B[ek];W[ha]C[];B[ko];W[ia]C[well done! sekiRIGHT])
(;W[ia];B[ab]C[black can play a18]))
(;W[jh];B[gf];W[ja];B[ab]))
(;W[ja];B[ge]C[2 eyes! black lives, white died]))
(;W[jh];B[da]
(;W[ja];B[gf];W[ha];B[ge]
(;W[gg])
(;W[hg]C[NOTTHIS])
(;W[ia]))
(;W[gf];B[gg];W[ge];B[gf];W[ja];B[ab])
(;W[gg];B[gf];W[ja];B[ab]
(;W[ka];B[bc])
(;W[ha];B[bc])))
(;W[hg];B[da]
(;W[gf];B[gg]
(;W[ge];B[gf];W[ja];B[ab])
(;W[ja];B[ge]C[2 eyes black lives, white dies]))
(;W[ja];B[gf];W[ha];B[ge]
(;W[ia];B[ab])
(;W[jh];B[ia];W[dl];B[dm];W[ha];B[jo];W[ia]C[well done! sekiRIGHT])))
(;W[ka];B[da]
(;W[ja];B[gf];W[ha];B[ge]
(;W[jh];B[ab])
(;W[ia];B[ab])
(;W[gg];B[ab])
(;W[hg];B[ab]))
(;W[gf];B[gg];W[ge];B[gf];W[ja];B[ab]))
(;W[dl];B[dm];W[gg];B[gf];W[ka];B[da];W[ja];B[ab]))