(;SZ[19]AW[ac]AW[bc]AW[cc]AW[cd]AW[dd]AW[ed]AW[ec]AW[eb]AW[ea]AW[ba]AB[bb]AB[cb]AB[db]AB[ad]AB[bd]AB[ce]AB[bf]AB[de]AB[ee]AB[fe]AB[fd]AB[fc]AB[fb]AB[fa]C[don't let anything fishy happen ... Black can win any ko.]FF[4]GM[1]AP[Jago:Version 4.29]GN[temp]
(;W[ca]
(;B[da]
(;W[ab];B[aa];W[ba]C[alive in seki. Black has 1 point for the captured stoneRIGHT])
(;W[dc];B[ab]))
(;B[ab];W[da]C[Black will not play like this as Black misses the point for the captured stone.RIGHT]))
(;W[ab];B[ca]C[Ko ( a one approach move 1000 year ko)])
(;W[da];B[ca];W[ab];B[aa]C[direct ko]))