(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[9]KM[0.00] PW[White]PB[Black]AW[ga][ha][ia][gb][hb][ib][bc][bd][cd][hd][id][ce][he][cf][ff][gf][hf][if][ag][bg][cg][eg][fg][ig][ah][ch][fh][gh][hh][bi][ci][gi][hi][ii]AB[fa][bb][fb][cc][dc][ec][fc][gc][hc][dd][gd][de][ee][fe][ge][df][dh][eh][di][ei]C[Black to play and win. No komi, no prisoners. (Hint: Play the best endgame)] (;B[ic]CR[ic] (;W[ab]CR[ab] (;B[dg]CR[dg] ;W[cb]CR[cb] (;B[db]CR[db] ;W[ba]CR[ba] ;B[da]CR[da] ;W[ca]CR[ca]C[RIGHT Black wins by a point. White A8 is usually sente, but not in this case.]) (;B[da]CR[da] ;W[ba]CR[ba] ;B[db]CR[db] ;W[ca]CR[ca]C[RIGHT Black wins by a point. White A8 is usually sente, but not in this case.])) (;B[ba]CR[ba] ;W[dg]CR[dg]C[W+1]) (;B[cb]CR[cb] ;W[dg]CR[dg] ;B[ba]CR[ba]C[W+1]) (;B[ca]CR[ca] ;W[dg]CR[dg] ;B[ba]CR[ba]C[W+1])) (;W[dg]CR[dg] ;B[ab]CR[ab] ;W[ac]CR[ac]C[RIGHT D3 was white's mistake which lost a point. B+2])) (;B[ab]CR[ab] ;W[ic]CR[ic] ;B[dg]CR[dg] ;W[ac]CR[ac]C[W+1]) (;B[dg]CR[dg] ;W[ic]CR[ic] ;B[ab]CR[ab] ;W[ac]CR[ac]C[W+1]) (;B[ac]CR[ac] ;W[ic]CR[ic] ;B[dg]CR[dg] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ad]CR[ad] (;B[cb]CR[cb] ;W[ab]CR[ab] ;B[ba]CR[ba] ;W[ac]CR[ac]C[W+3]) (;B[ca]CR[ca] ;W[ab]CR[ab] ;B[ba]CR[ba] ;W[ac]CR[ac]C[W+3]) (;B[ba]CR[ba] ;W[ab]CR[ab] (;B[cb]CR[cb] ;W[ac]CR[ac]C[W+3]) (;B[ca]CR[ca] ;W[ac]CR[ac]C[W+3W+3]) (;B[db]CR[db] ;W[ac]CR[ac]C[W+3]) (;B[da]CR[da] ;W[ac]CR[ac]C[W+3]))))