(;SZ[4]AB[aa]AB[ca]AW[bb]AW[db]AB[cc]AB[ac]AW[bd]AW[dd]C[No komi, no prisoners yet. Black to play and win. Some symmetrical positions have been blocked.]AP[goproblems]
(;B[cb];W[bc]
(;B[cd];W[ba]
(;B[dc];W[ab]C[Jigo])
(;B[ab];W[ad]
(;B[ab];W[dc];B[da];W[dc]
(;B[aa]C[RIGHT])
(;B[ac]C[RIGHT]))
(;B[dc];W[ab]C[Jigo])))
(;B[ba];W[cd]
(;B[dc];W[ab];B[ad]C[RIGHT])
(;B[ab];W[dc]C[Jigo]))
(;B[ab]
(;W[cd]
(;B[ba];W[dc])
(;B[dc];W[ba];B[ad]C[RIGHT]))
(;W[ba]
(;B[cd];W[ad]
(;B[ab];W[dc];B[da];W[dc]
(;B[aa]C[RIGHT])
(;B[ac]C[RIGHT]))
(;B[dc];W[ab]C[Jigo]))
(;B[dc];W[ad]
(;B[ab];W[cd])
(;B[cd];W[ab])))))
(;B[ba]
(;W[cb]
(;B[ab];W[bc])
(;B[bc];W[ab];B[dc];W[da];B[ba];W[cd];B[ad];W[cd]
(;B[ca]C[RIGHT])
(;B[aa]C[RIGHT])))
(;W[bc]
(;B[cb];W[cd]
(;B[dc];W[ab];B[ad]C[RIGHT])
(;B[ab];W[dc]C[Jigo]))
(;B[ab];W[cb]))
(;W[cd];B[bc]
(;W[cb]
(;B[ab];W[dc]C[Jigo])
(;B[dc];W[ab]
(;B[da]C[RIGHT])
(;B[ad];W[da];B[ba];W[cd]
(;B[ca]C[RIGHT])
(;B[aa]C[RIGHT]))))
(;W[dc];B[cb]C[RIGHT])))
(;B[cd];W[cb]
(;B[bc];W[ab]
(;B[dc];W[ba]C[Jigo])
(;B[ba];W[da]
(;B[dc];W[ba]C[Jigo])
(;B[ba];W[dc])))
(;B[ab];W[bc])
(;B[dc];W[bc])
(;B[ba];W[bc]))
(;B[bc]C[NOTTHIS])
(;B[ab]C[NOTTHIS])
(;B[dc]C[NOTTHIS])
(;B[ad];W[bc]
(;B[ba];W[cb])
(;B[cb];W[cd];B[ba];W[ab];B[dc];W[da])
(;B[ab];W[ba]))
(;B[da]C[NOTTHIS]))