(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[4]KM[0.00] AW[ca][cc][dc]AB[aa][ab][db][ac][bd]C[No komi, no prisoners - what's the best result for Black?] (;B[cb]CR[cb] ;W[bb]CR[bb] (;B[bc]CR[bc] ;W[da]CR[da] (;B[cb]CR[cb] ;W[db]CR[db] (;B[ba]CR[ba]C[Black wins! RIGHT]) (;B[cd]CR[cd] ;W[ba]CR[ba]C[Seki])) (;B[ba]CR[ba] ;W[cb]CR[cb] ;B[cd]CR[cd]C[Seki, White wins by two points (the two prisoners)])) (;B[ba]CR[ba] ;W[bc]CR[bc]C[White wins])) (;B[bc]CR[bc] ;W[cb]CR[cb] ;B[cd]CR[cd]C[Seki, White wins by one point (the prisoner)]) (;B[bb]CR[bb] ;W[cb]CR[cb]C[White wins]) (;B[cd]CR[cd] ;W[bc]CR[bc]C[White wins]))