(;AB[ab]AB[ac]AB[bc]AB[bd]AB[cd]AB[de]AB[df]AB[cf]AB[bg]AW[bb]AW[cb]AW[cc]AW[dd]AW[ee]AW[ec]AW[ef]AW[eg]AW[dh]AW[ch]AW[bh]AW[ah]C[White to kill black unconditionally (without ko)]AP[goproblems]
(;W[af]
(;B[ag]
(;W[bf];B[cg]
(;W[dg]C[RIGHT])
(;W[be];B[ae]C[KoCHOICE])
(;W[ae];B[be]C[CHOICE]))
(;W[cg];B[bf]C[CHOICE])
(;W[ae];B[be]C[CHOICE])
(;W[be];B[ae]C[KoCHOICE]))
(;B[bf];W[ae];B[ag];W[be]C[RIGHT])
(;B[ae];W[bf]C[RIGHT]))
(;W[bf];B[af]
(;W[be];B[ae]
(;W[ag];B[ce]
(;W[bf];B[cg]C[CHOICE])
(;W[cg];B[bf]C[CHOICE]))
(;W[cg];B[ce]
(;W[bf];B[ag]C[CHOICE])
(;W[ag];B[bf]C[CHOICE])))
(;W[ag];B[be]C[CHOICE]))
(;W[ag];B[af]
(;W[be];B[ae]C[CHOICE])
(;W[ae];B[be]C[KoCHOICE]))
(;W[ae];B[be]
(;W[af];B[ag]C[CHOICE])
(;W[ag];B[af]C[KoCHOICE]))
(;W[be];B[ae];W[af];B[ag]C[KoCHOICE]))