(;AB[dc]AB[db]AB[da]AW[eb]AW[ec]AW[ed]AW[dd]AW[cd]AW[bd]AB[ba]AB[bc]C[slay black]AW[gb]AW[bf]AP[goproblems]
(;W[ab];B[ac]
(;W[cb]
(;B[cc];W[bb]C[black can't live wth that thorn in his heartRIGHT])
(;B[bb];W[cc]))
(;W[bb];B[cb];W[ad];B[aa])
(;W[cc];B[cb];W[ad];B[bb])
(;W[ad];B[bb]))
(;W[ac];B[ab]
(;W[cc];B[cb];W[bb]C[ko is too much mercy])
(;W[cb];B[cc]))
(;W[cc];B[cb];W[ac];B[ab];W[bb]C[not deadly enough])
(;W[bb];B[ab];W[cc];B[cb])
(;W[cb];B[cc]
(;W[ab];B[ac];W[bb]C[black can't live with that thorn in his heartRIGHT])
(;W[ac];B[ab])
(;W[bb];B[ab])))