(;
AW [ca][cb][bc][cd][ae][ce][bf]
AB [ba][da][ab][db][dc][dd][de][cf][ag][bg][cg]
C[black to kill all of the stones without ko.]
(;B[bb] ;W[cc]
(;B[af]
(;W[be] C[CHOICE]
(;B[ac] C[RIGHT white dies.])
(;B[ad] C[RIGHT white dies.])
(;B[bd] ;W[ad] C[seki.])
)
(;W[ac] ;B[be] ;W[aa] ;B[bb] C[RIGHT CHOICE white dies.])
(;W[bd] ;B[ac] C[RIGHT CHOICE white dies.])
(;W[ad] ;B[be] C[RIGHT CHOICE white dies.])
)
(;B[ac] ;W[ad]
(;B[be] ;W[aa]
(;B[af] ;W[ab] C[white lives.])
(;B[bb] ;W[af] C[white lives.])
(;B[ab] ;W[bb] ;B[ba] ;W[ac] C[white lives.])
)
(;B[bd] ;W[be] ;B[af] ;W[aa] ;B[ab] ;W[ba] C[white lives.])
)
(;B[be] ;W[bd]
(;B[af] ;W[ac] ;B[be] ;W[aa] ;B[bb] ;W[bf] C[ko. black can do better.])
(;B[ac] ; W[af] C[seki.])
)
)
(;B[cc] ;W[bb]
(;B[bd] ;W[aa] C[ko. black can do better.])
(;B[aa] ;W[ac] C[white lives.])
)
(;B[bd] ;W[cc]
(;B[ac] ;W[ad] ;B[af] ;W[be] C[seki.])
(;B[af] ;W[be] ;B[ac] ;W[ad] C[seki.])
(;B[be] ;W[ad]
(;B[af] ;W[be] ;B[ac] C[seki.])
(;B[be] ;W[af]
(;B[ac] ;W[bd] C[seki.])
(;B[bb] C[white tenuki. seki.])
)
)
(;B[bb] ;W[ac]
(;B[af] ;W[aa] ;B[be] ;W[bb] C[white lives.])
(;B[be]
(;W[ad] C[CHOICE]
(;B[be] ;W[aa] C[white lives.])
(;B[af] ;W[aa] C[white lives.])
)
(;W[aa] C[CHOICE]
(;B[af] ;W[bb] C[white lives.])
(;B[bb] ;W[ad] C[white lives.])
)
)
)
)
(;B[af] ;W[bb]
(;B[ac] ;W[ad]
(;B[be] ;W[aa] C[white lives.])
(;B[bd] ;W[be] C[white lives.])
)
(;B[be] ;W[ac] C[white lives.])
(;B[aa] ;W[be] C[white lives.])
)
(;B[be] ;W[bb]
(;B[aa] ;W[ac]
(;B[aa] ;W[bd] C[white lives.])
(;B[af] ;W[aa] C[white lives.])
)
(;B[af] ;W[ac] C[white lives.])
(;B[cc] ;W[bd]
(;B[ac] ;W[ad] C[white lives.])
(;B[af] ;W[ac] C[white lives.])
)
)
(;B[ac] ;W[bb]
(;B[bd] ;W[aa] C[ko. black can do better.])
(;B[aa] ;W[ad] C[white lives.])
(;B[be] ;W[bd] ;B[af] ;W[ad] C[white lives.])
(;B[af] ;W[ad] ;B[be] ;W[aa] C[white lives.])
)
(;B[ad] ;W[bb]
(;B[bd] ;W[be] C[white lives.])
(;B[ac] ;W[bd] C[white lives.])
(;B[af] ;W[ac] C[white lives.])
)
)