(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[7]KM[0.50]TM[] AW[da][fa][db][fb][dc][cd][dd][ed][fd][be][ce][bf][bg]AB[ca][ab][cb][gb][cc][ad][bd][de][ee][fe][af][cf][df]C[No komi, no prisoners - Black to play and win!] (;B[ff]CR[ff] ;W[ge]CR[ge] ;B[gf]CR[gf] ;W[gd]CR[gd] ;B[ae]CR[ae] ;W[cg]CR[cg] ;B[dg]LB[fg:A]TR[ff]CR[dg]C[Black wins by one point! Thanks to the marked stone, the white endgame at the right was gote - if Black starts with A instead (also a commom idea), White would be able to play g4 in sente( see navigate solution for more details). RIGHT]) (;B[fg]CR[fg] ;W[gd]CR[gd] (;B[ae]CR[ae] ;W[gf]CR[gf] ;B[ge]CR[ge] ;W[ff]CR[ff] (;B[cg]CR[cg] ;W[ef]CR[ef]C[Black is dead....]) (;B[ef]CR[ef] ;W[cg]CR[cg]C[Black is dead....])) (;B[ge]CR[ge] ;W[ae]CR[ae] ;B[cg]CR[cg]C[This is only a jigo!]) (;B[cg]CR[cg] ;W[ge]CR[ge] ;B[gf]CR[gf] ;W[ae]CR[ae]C[This is a desaster for black: white wins by one point!])) (;B[eg]CR[eg] ;W[gd]CR[gd] (;B[ae]CR[ae] ;W[gf]CR[gf] ;B[ge]CR[ge] ;W[ff]CR[ff] ;B[cg]CR[cg] ;W[ef]CR[ef]C[Black is dead....]) (;B[ge]CR[ge] ;W[cg]CR[cg] ;B[ff]CR[ff] ;W[ae]CR[ae]C[This is a two point loss for Black!])) (;B[gd]CR[gd] ;W[cg]CR[cg] (;B[dg]CR[dg] ;W[ge]CR[ge] (;B[gf]CR[gf] ;W[fg]CR[fg]C[Black is dead]) (;B[ff]CR[ff] ;W[eg]CR[eg] (;B[gf]CR[gf] ;W[fg]CR[fg]C[Black is dead]) (;B[fg]CR[fg] ;W[gf]CR[gf]C[Black is dead]))) (;B[ff]CR[ff] ;W[eg]CR[eg] ;B[dg]CR[dg] ;W[ge]CR[ge] ;B[gf]CR[gf] ;W[fg]CR[fg]C[Black is dead]) (;B[fg]CR[fg] ;W[gf]CR[gf] (;B[ff]CR[ff] ;W[dg]CR[dg] ;B[eg]CR[eg] ;W[ge]CR[ge]C[Black is dead]) (;B[ge]CR[ge] ;W[ff]CR[ff] ;B[dg]CR[dg] ;W[ef]CR[ef]C[Black is dead])) (;B[ge]CR[ge] ;W[dg]CR[dg] ;B[eg]CR[eg] ;W[ff]CR[ff]C[Black is dead])) (;B[ge]CR[ge] ;W[ff]CR[ff] ;B[fg]CR[fg] ;W[eg]CR[eg] ;B[gf]CR[gf] ;W[gg]CR[gg]C[Black can't hope to win this ko]) (;B[cg]CR[cg] ;W[ff]CR[ff] ;B[gf]CR[gf] ;W[eg]CR[eg] ;B[fg]CR[fg] ;W[gg]CR[gg]C[Black can't hope to win this ko]))