(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[7]KM[0.50] AW[ea][eb][gb][dc][fc][bd][cd][dd][ed][fd][gd][de][df][dg][eg]AB[ca][da][db][bc][cc][ad][be][ce][ee][fe][ge][cf][ef][gf][cg][fg]C[No komi, no prisoners -White to play and win!]PL[W] (;W[ba]CR[ba] ;B[cb]CR[cb] (;W[af]CR[af] ;B[ae]CR[ae] (;W[ab]CR[ab] ;B[ac]CR[ac] ;W[bg]CR[bg]C[I like this seki :) RIGHT]) (;W[bg]CR[bg] ;B[ab]CR[ab]C[This is a jigo, too, but White will have to sacrifice three more stones, with a jigo as result.]) (;W[bb]CR[bb] ;B[ac]CR[ac] ;W[bg]CR[bg] ;B[ab]CR[ab]C[Also a seki - and a jigo, since black will capture three white stones in the upper left.])) (;W[ab]CR[ab] ;B[ac]CR[ac] ;W[af]CR[af] ;B[bf]CR[bf] (;W[bg]CR[bg] ;B[ag]CR[ag]C[There is no white ko threat]) (;W[ag]CR[ag] ;B[ae]CR[ae]C[This is a seki, too, but Black can capture three more stones in the lower left, making it a jigo.]) (;W[ae]CR[ae] ;B[ag]CR[ag] ;W[ae]CR[ae] ;B[af]CR[af]C[This is only a jigo!])) (;W[bb]CR[bb] ;B[ac]CR[ac] ;W[af]CR[af] ;B[bf]CR[bf] ;W[bg]CR[bg] ;B[ag]CR[ag]C[There is no white ko threat.])) (;W[af]CR[af] ;B[ae]CR[ae] (;W[ba]CR[ba] ;B[cb]CR[cb] (;W[ab]CR[ab] ;B[ac]CR[ac] ;W[bg]CR[bg]C[I like this seki :) RIGHT]) (;W[bg]CR[bg] ;B[ab]CR[ab]C[This is a seki, too, but White will have to sacrifice three more stones in the upper left, making the game a jigo.])) (;W[bg]CR[bg] ;B[bb]CR[bb])) (;W[ab]CR[ab] ;B[bb]CR[bb] ;W[ba]CR[ba] ;B[aa]CR[aa] (;W[ae]CR[ae] ;B[ac]CR[ac] ;W[af]CR[af] ;B[bg]CR[bg]C[Black wins by two points!]) (;W[af]CR[af] ;B[ac]CR[ac] ;W[ae]CR[ae] ;B[bg]CR[bg]C[Black wins by two points!])) (;W[bb]CR[bb] ;B[cb]CR[cb] ;W[ba]CR[ba] ;B[ac]CR[ac] ;W[af]CR[af] ;B[ae]CR[ae] ;W[bg]CR[bg] ;B[ab]CR[ab]))