(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[4]KM[0.00] PW[Weiß]PB[Schwarz]AW[ba][bb][cc]AB[ca][ab][db][ac][dc][ad][bd]C[Black to play - what's the best he can do?] (;B[cb]CR[cb] (;W[cd]CR[cd] ;B[bc]CR[bc] ;W[aa]CR[aa] ;B[bc]CR[bc]C[Black wins by eleven points :) RIGHT]) (;W[bc]CR[bc] ;B[cd]CR[cd]C[White is lost!])) (;B[cd]CR[cd] ;W[cb]CR[cb] (;B[bc]CR[bc] ;W[da]CR[da]C[White wins]) (;B[dd]CR[dd] ;W[da]CR[da]C[White connects the ko and wins by one point]) (;B[aa]CR[aa] ;W[da]CR[da]C[White wins])) (;B[bc]CR[bc] ;W[cb]CR[cb] ;B[cd]CR[cd] ;W[da]CR[da]C[White wins!]))