(;SZ[19]AW[db]AW[bc]AW[cc]AW[dc]AW[ec]AW[dd]AW[cf]AW[df]AB[bb]AB[eb]AB[fb]AB[fc]AB[cd]AB[ed]AB[ce]AB[de]AB[ee]AB[ge]C[W to save her corner stones.]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]GN[Go Seigen Tesuji #15]US[YuJun]PL[W]
(;W[ad]
(;B[be]C[CHOICE];W[ba]
(;B[ab]C[CHOICE];W[da];B[cb];W[bd]C[Seki. W lives.RIGHT])
(;B[ca]C[CHOICE]
(;W[cb];B[aa];W[ab];B[ac];W[da]C[Double Ko. W lives.RIGHT];B[bd]
(;W[ba]C[Double Ko. W lives.RIGHT])
(;W[ab]C[Double Ko. W lives.RIGHT]))
(;W[ab];B[aa]
(;W[da];B[ac];W[cb];B[bd]
(;W[ba]C[Double Ko. W lives.RIGHT])
(;W[ab]C[Double Ko. W lives.RIGHT]))
(;W[cb];B[ac];W[da];B[bd]
(;W[ba]C[Double Ko. W lives.RIGHT])
(;W[ab]C[Double Ko. W lives.RIGHT])))))
(;B[bd]C[CHOICE]
(;W[af]C[W connects out. RIGHT])
(;W[ae];B[bf];W[be];B[bg]C[Nope.])
(;W[ba];B[ab];W[af];B[ac]C[Nope];W[ae];B[da]C[W dies.])))
(;W[ab];B[ba]
(;W[ad];B[be]LB[da:B]LB[bd:A]C[A and B are miai. W dies.])
(;W[bd];B[be]LB[da:B]LB[ad:A]C[A and B are miai. W dies.]))
(;W[ba]C[];B[ab]
(;W[ad];B[bd]C[]
(;W[af];B[ac];W[ae];B[da]C[W dies.])
(;W[ac];B[ae];W[da];B[cb]C[W dies.]))
(;W[ae];B[bd];W[ad];B[bf]C[Nope.]))
(;W[bd];B[be]
(;W[ba];B[ab]
(;W[da];B[ad];W[ac];B[cb]C[W dies.])
(;W[cb];B[da]C[W dies.]))
(;W[ad];B[ab];W[ba];B[da];W[ca];B[ea]C[W dies.])
(;W[da];B[ad];W[ba];B[ac]C[W dies.])
(;W[ab];B[ba]LB[da:B]LB[ad:A]C[A and B are miai. W dies.]))
(;W[be];B[bd];W[ad];B[bf];W[ae];B[bg]C[Nope.])
(;W[af];B[ad];W[bd];B[be];W[ae];B[bf]C[nope.]))