(;AB[bb][bc][bd][be][ad][cc][db][da][ea]AW[ae][af][bf][cf][ce][cd][dc][ec][eb][fa][gb]SZ[19]C[White to kill]
(;W[ba];B[cb];W[ab]C[RIGHT Bent four in the corner. By Japaneese rules, black is dead. By IGS rules, the situation would have to be played out. Confused ? ])
(;W[cb];B[ca])
(;W[ca];B[cb])
(;W[aa];B[ba])
(;W[ab];B[ba]))