(;AW[ba]AW[bb]AW[bc]AW[db]AB[bd]AB[cd]AB[dc]AB[de]AB[gc]AB[ec]C[Black to kill]AP[goproblems]
(;B[eb];W[da]
(;B[cb];W[cc];B[ac];W[ab])
(;B[cc];W[cb]))
(;B[cb];W[cc]
(;B[eb];W[da];B[ac];W[ab])
(;B[da];W[ca]
(;B[eb];W[ea])
(;B[ea];W[eb])))
(;B[da];W[eb]
(;B[fb]
(;W[ea];B[cb];W[ca];B[cc]C[RIGHT])
(;W[ca];B[cc]
(;W[cb];B[ea];W[fa];B[ea]C[RIGHT])
(;W[ea];B[cb]C[RIGHT])))
(;B[cb];W[cc];B[ea];W[fb]))
(;B[ac]
(;W[ab]
(;B[eb];W[da])
(;B[cc];W[cb];B[eb];W[da])
(;B[da];W[eb];B[fb];W[ea];B[cb];W[ca];B[cc]TR[ac]TR[ab]C[UnnecessaryRIGHT]))
(;W[eb];B[fb];W[cc]
(;B[ca];W[ab];B[ea];W[cb])
(;B[ea];W[da];B[ab]C[RIGHT]))))