(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[7]KM[0.50] AW[da][cb][cc][dd][be][ce][de][af][cf]AB[db][dc][ed][ee][bf][df][ef][bg][dg]TR[da]C[No komi, no prisoners - Black to play and win!] (;B[fb]CR[fb] (;W[ea]CR[ea] ;B[cg]CR[cg] ;W[eb]CR[eb] ;B[ec]CR[ec] ;W[fa]CR[fa] ;B[gb]CR[gb]C[Black wins by one point! RIGHT CHOICE]) (;W[cg]CR[cg] ;B[ea]CR[ea] ;W[ca]CR[ca]C[Black wins by one point! RIGHT CHOICE]) (;W[fa]CR[fa] ;B[eb]CR[eb] ;W[ea]CR[ea] ;B[cg]CR[cg] (;W[gb]CR[gb] ;B[gc]CR[gc] ;W[fc]CR[fc] ;B[ga]CR[ga]C[White can't play this ko]) (;W[ca]CR[ca] ;B[gb]CR[gb]C[Black wins by three points!]))) (;B[ea]CR[ea] ;W[eb]CR[eb] ;B[ca]CR[ca] ;W[ec]CR[ec]C[Black is lost]) (;B[eb]CR[eb] ;W[ea]CR[ea] ;B[fa]CR[fa] ;W[ca]CR[ca] ;B[fb]CR[fb] ;W[cg]CR[cg]C[White wins by one point!]) (;B[cg]CR[cg] ;W[eb]CR[eb] (;B[ec]CR[ec] ;W[fb]CR[fb]C[This is an easy win for white]) (;B[fb]CR[fb] ;W[ec]CR[ec] ;B[fc]CR[fc]C[White wins!])))