(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[9]KM[0.00] PW[White]PB[Black]AW[gb][hb][ec][fc][hc][fd][hd][ce][de][fe][he][bf][gf][bg][cg][dg][gg][ah][eh][gh][ai][gi]AB[bb][db][eb][fb][cc][bd][cd][ed][be][ee][ie][af][hf][if][ag][hg][bh][ch][dh][hh][ih][hi]C[No komi, no prisoners, black to play and win]PL[B] (;B[bi]CR[bi] ;W[dd]CR[dd] (;B[di]CR[di] ;W[ei]CR[ei] (;B[ga]CR[ga] ;W[ha]CR[ha] ;B[fa]CR[fa] ;W[id]CR[id]C[jigo.]) (;B[id]CR[id] ;W[fa]CR[fa] (;B[ic]CR[ic] ;W[ib]CR[ib] ;B[ea]CR[ea] ;W[ga]CR[ga]C[jigo.]) (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[ic]CR[ic] ;W[ib]CR[ib]C[jigo.]))) (;B[ei]CR[ei] (;W[fh]CR[fh]C[CHOICE] (;B[di]CR[di] ;W[fa]CR[fa] (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[id]CR[id] ;W[ic]CR[ic]C[RIGHT]) (;B[id]CR[id] ;W[ic]CR[ic] ;B[ea]CR[ea] ;W[ga]CR[ga]C[RIGHT])) (;B[ga]CR[ga] ;W[ha]CR[ha] (;B[fa]CR[fa] ;W[ah]CR[ah] (;B[ae]CR[ae] ;W[di]CR[di] (;B[ci]CR[ci] ;W[fi]CR[fi] ;B[ai]CR[ai] ;W[id]CR[id] ;B[ah]CR[ah] ;W[di]CR[di]TW[ia][ib][gc][ic][ed][gd][ee][ge][cf][df][ef][ff][eg][fg]TB[aa][ba][ca][da][ea][ab][cb][ac][bc][ad][ig][ii]C[white wins.]) (;B[id]CR[id] ;W[ic]CR[ic] ;B[ci]CR[ci] ;W[fi]CR[fi] ;B[ai]CR[ai] ;W[di]CR[di] (;B[eg]CR[eg] (;W[ef]CR[ef]) (;W[ah]CR[ah])) (;B[ah]CR[ah] ;W[ei]CR[ei]TW[ia][ib][gc][ed][gd][ee][ge][cf][df][ef][ff][eg][fg]TB[aa][ba][ca][da][ea][ab][cb][ac][bc][ad][ig][ii]))) (;B[ai]CR[ai] ;W[di]CR[di] ;B[ci]CR[ci] ;W[id]CR[id] ;B[ae]CR[ae] ;W[fi]CR[fi] ;B[ah]CR[ah] ;W[di]CR[di]C[white wins. (any ko threat costs 1 point)])) (;B[di]CR[di]C[this may work, but G9 is such a bad move that it cannot be included in any correct answer.]))) (;W[di]CR[di]C[CHOICE] (;B[eg]CR[eg] ;W[fi]CR[fi] ;B[df]CR[df]C[RIGHT white collapses.]) (;B[ci]CR[ci] ;W[ah]CR[ah] ;B[ai]CR[ai] ;W[fh]SQ[ei]CR[fh]C[white wins. (white will win the ko at marked stone, E1)]))) (;B[eg]CR[eg] ;W[dc]CR[dc] (;B[ei]CR[ei] ;W[fh]CR[fh] (;B[di]CR[di] ;W[fa]CR[fa] (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[id]CR[id] ;W[ic]CR[ic]C[jigo.]) (;B[id]CR[id] ;W[ic]CR[ic] ;B[ea]CR[ea] ;W[ga]CR[ga]C[jigo.])) (;B[ga]CR[ga] ;W[ha]CR[ha] (;B[fa]CR[fa] ;W[ah]CR[ah]) (;B[di]CR[di] ;W[fa]CR[fa] (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[id]CR[id] ;W[ic]CR[ic]C[jigo.]) (;B[id]CR[id] ;W[ic]CR[ic] ;B[ea]CR[ea] ;W[ga]CR[ga]C[jigo.])))) (;B[fh]CR[fh] ;W[ei]CR[ei] ;B[di]CR[di] ;W[fi]CR[fi]C[white wins]))) (;B[ae]CR[ae] ;W[dd]CR[dd] (;B[di]CR[di] ;W[ei]CR[ei] (;B[ga]CR[ga] ;W[ha]CR[ha] ;B[fa]CR[fa] ;W[id]CR[id]C[jigo.]) (;B[id]CR[id] ;W[fa]CR[fa] (;B[ic]CR[ic] ;W[ib]CR[ib] ;B[ea]CR[ea] ;W[ga]CR[ga]C[jigo.]) (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[ic]CR[ic] ;W[ib]CR[ib]C[jigo.]))) (;B[ei]CR[ei] (;W[fh]CR[fh]C[CHOICE] (;B[di]CR[di] ;W[fa]CR[fa] (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[id]CR[id] ;W[ic]CR[ic]C[RIGHT]) (;B[id]CR[id] ;W[ic]CR[ic] ;B[ea]CR[ea] ;W[ga]CR[ga]C[RIGHT])) (;B[ga]CR[ga] ;W[ha]CR[ha] (;B[fa]CR[fa] ;W[di]CR[di]) (;B[di]CR[di]C[this may work, but G9 is VERY BAD and cannot be included in any corroct answer.]))) (;W[di]CR[di]C[CHOICE] (;B[eg]CR[eg] ;W[fi]CR[fi] ;B[df]CR[df]C[RIGHT white collapses.]) (;B[ci]CR[ci] ;W[fi]CR[fi] (;B[bi]CR[bi] ;W[di]CR[di]C[white wins.]) (;B[eg]CR[eg] ;W[di]CR[di] ;B[bi]CR[bi] ;W[dc]CR[dc]C[white wins.])))) (;B[eg]CR[eg] ;W[dc]CR[dc] (;B[ei]CR[ei] ;W[fh]CR[fh] ;B[di]CR[di] ;W[fa]CR[fa] (;B[id]CR[id] ;W[ic]CR[ic] ;B[ea]CR[ea] ;W[ga]CR[ga]C[jigo.]) (;B[ea]CR[ea] ;W[ga]CR[ga] ;B[id]CR[id] ;W[ic]CR[ic]C[jigo.])) (;B[fh]CR[fh] ;W[ei]CR[ei] ;B[di]CR[di] ;W[fi]CR[fi]C[white wins.]))) (;B[dd]CR[dd] ;W[ae]CR[ae]C[oops.]) (;B[ef]CR[ef] ;W[ae]CR[ae]C[too big.]) (;B[eg]CR[eg] ;W[ae]CR[ae]C[black cannot do anything.]))