Problem	13099
Created	2009-09-20
Source
Rating

Difficulty	9 dan
Average Solve Time	56 secs
User Attempts	21 / 285
Solve Ratio Rating	4 dan
	rating history

Black just played the marked stone.
White to play and win
All comments appreciated ;)

(;AB[bi]AB[ah]AB[bg]AB[cg]AB[df]AB[de]AB[dd]AB[ed]AB[fd]AB[fe]AB[ff]AW[ef]AB[eh]AW[bf]AW[cf]AW[ce]AW[cd]AW[dc]AW[ec]AW[fb]AW[gb]AW[af]AW[ag]AB[fc]AB[cc]AB[gg]AB[gh]AB[hh]AB[hi]AB[ii]AW[ih]AW[ig]AW[hg]AW[hf]AW[gf]AW[ge]AB[gc]AW[hc]AW[hb]AW[gd]AW[id]AW[he]C[no komi, no extra-prisoners]SZ[9]TR[cc]AP[goproblems] (;W[dg] (;B[dh] (;W[bc];B[cb] (;W[eb];B[bb] (;W[ab];B[bd];W[ad];B[ac] (;W[ch];B[eg];W[bc];B[aa] (;W[be];B[ac];W[bh];B[ci];W[ab]C[RIGHT]) (;W[ba];B[ac];W[bh];B[ae] (;W[dg];B[ci];W[be];B[ca]) (;W[ai];B[dg]))) (;W[bh];B[eg];W[bc];B[aa];W[be];B[ac];W[ch];B[ci];W[ab]C[RIGHT]) (;W[eg];B[ae]) (;W[fg];B[eg];W[bc];B[aa];W[be];B[ac];W[fh];B[bd];W[gi];B[ae])) (;W[eg];B[fg];W[ab])) (;W[db];B[bb]C[];W[ab];B[bd]C[];W[ad];B[ac]C[];W[ch];B[eg];W[bc];B[da];W[eb];B[ac];W[bh] (;B[ci];W[bc];B[aa] (;W[ba];B[ac]) (;W[be];B[ac]C[white is dead];W[fg];B[bd];W[fh];B[fi];W[bc];B[ab];W[ca];B[bd])) (;B[ae];W[dg];B[ci];W[be];B[aa];W[ad];B[bc];W[ca];B[cg];W[ai];B[di];W[ea];B[dg];W[da];B[bg];W[ba];B[ae])) (;W[bb];B[eb]) (;W[da];B[bb];W[ab];B[bd];W[ad];B[ac];W[ch];B[eg];W[bc];B[aa] (;W[ba];B[ac];W[bh];B[ci];W[bc];B[db];W[eb];B[ac]C[white is dead]) (;W[be];B[ac];W[bh];B[ci];W[ab];B[db];W[ba];B[eb])) (;W[ea];B[bb];W[ab];B[bd];W[ad];B[ac];W[ch];B[eg];W[bc];B[aa] (;W[ba];B[ac];W[bh];B[ci];W[bc];B[db] (;W[eb];B[ac]C[white is dead]) (;W[be];B[eb])) (;W[be];B[ac];W[bh];B[ci];W[ab];B[da] (;W[ba];B[eb]) (;W[eb];B[ac])))) (;W[eg];B[fg];W[bc];B[cb];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac];W[ch];B[ae];W[bh];B[ci] (;W[fi];B[cg];W[bg];B[be];W[ai];B[di];W[fh];B[ah]) (;W[cg];B[fi];W[be];B[bc];W[ad];B[aa];W[ca];B[da];W[db];B[di];W[ai];B[ee];W[ea];B[ae];W[da];B[ah];W[ad];B[ai];W[ba];B[ae]) (;W[be];B[cg];W[ad];B[bc];W[bg];B[di];W[fi];B[fh];W[ai];B[ee];W[cg];B[ae])) (;W[cb];B[bc];W[bb];B[bd];W[ac];B[ae])) (;B[eg];W[bc];B[cb];W[db];B[bb];W[ab];B[bd];W[ad];B[ac];W[ch];B[dh])) (;W[bc];B[cb] (;W[dg];B[dh] (;W[db];B[bb]C[];W[ab];B[bd]C[];W[ad];B[ac]C[];W[ch];B[eg];W[bc];B[da];W[eb];B[ac];W[bh] (;B[ci];W[bc];B[aa] (;W[ba];B[ac]) (;W[be];B[ac]C[white is dead];W[fg];B[bd];W[fh];B[fi];W[bc];B[ab];W[ca];B[bd])) (;B[ae];W[dg];B[ci];W[be];B[aa];W[ad];B[bc];W[ca];B[cg];W[ai];B[di];W[ea];B[dg];W[da];B[bg];W[ba];B[ae])) (;W[eg];B[fg];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac];W[ch];B[ae];W[bh];B[ci] (;W[fi];B[cg];W[bg];B[be];W[ai];B[di];W[fh];B[ah]) (;W[cg];B[fi];W[be];B[bc];W[ad];B[aa];W[ca];B[da];W[db];B[di];W[ai];B[ee];W[ea];B[ae];W[da];B[ah];W[ad];B[ai];W[ba];B[ae]) (;W[be];B[cg];W[ad];B[bc];W[bg];B[di];W[fi];B[fh];W[ai];B[ee];W[cg];B[ae])) (;W[eb];B[bb] (;W[ab];B[bd];W[ad];B[ac] (;W[ch];B[eg];W[bc];B[aa] (;W[be];B[ac];W[bh];B[ci];W[ab]C[RIGHT]) (;W[ba];B[ac];W[bh];B[ae] (;W[dg];B[ci];W[be];B[ca]) (;W[ai];B[dg]))) (;W[bh];B[eg];W[bc];B[aa];W[be];B[ac];W[ch]) (;W[eg];B[ae]) (;W[fg];B[eg];W[bc];B[aa];W[be];B[ac];W[fh];B[bd];W[gi];B[ae])) (;W[eg];B[fg])) (;W[bb];B[eb]) (;W[da];B[bb];W[ab];B[bd];W[ad];B[ac];W[ch];B[eg];W[bc];B[aa] (;W[ba];B[ac];W[bh];B[ci];W[bc];B[db];W[eb];B[ac]C[white is dead]) (;W[be];B[ac];W[bh];B[ci];W[ab];B[db];W[ba];B[eb]))) (;W[db];B[bb] (;W[ab];B[bd];W[ad];B[ac] (;W[bh];B[ae];W[ai];B[ch]) (;W[dg];B[ae])) (;W[dg];B[dh] (;W[ab];B[bd]C[];W[ad];B[ac]C[];W[ch];B[eg];W[bc];B[da];W[eb];B[ac];W[bh] (;B[ci];W[bc];B[aa] (;W[ba];B[ac]) (;W[be];B[ac]C[white is dead];W[fg];B[bd];W[fh];B[fi];W[bc];B[ab];W[ca];B[bd])) (;B[ae];W[dg];B[ci];W[be];B[aa];W[ad];B[bc];W[ca];B[cg];W[ai];B[di];W[ea];B[dg];W[da];B[bg];W[ba];B[ae])) (;W[eg];B[fg];W[ab];B[bd];W[ad];B[ac];W[ch];B[bh];W[bc];B[da];W[eb];B[ac];W[ci];B[di];W[bc];B[aa] (;W[ba];B[ac]) (;W[be];B[ac]))) (;W[bd];B[ab] (;W[ac];B[ae]) (;W[ae];B[ac])) (;W[ad];B[ab] (;W[ca];B[ac];W[be];B[bd]) (;W[ac];B[be];W[ca];B[ae];W[bd];B[ae];W[be];B[ae])) (;W[ac];B[ab] (;W[ca];B[bd]) (;W[bd];B[ae])) (;W[ch];B[dh];W[ab];B[bd];W[ad];B[ac];W[dg];B[eg];W[bc];B[da];W[eb];B[ac];W[bh] (;B[ci];W[bc];B[aa] (;W[ba];B[ac]) (;W[be];B[ac]C[white is dead];W[fg];B[bd];W[fh];B[fi];W[bc];B[ab];W[ca];B[bd])) (;B[ae];W[dg];B[ci];W[be];B[aa];W[ad];B[bc];W[ca];B[cg];W[ai];B[di];W[ea];B[dg];W[da];B[bg];W[ba];B[ae]))) (;W[bb];B[eb]) (;W[fg];B[eg];W[db];B[da];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac];W[dg];B[dh];W[bc];B[aa];W[be];B[ac];W[fh];B[bd];W[gi];B[ae]) (;W[eb];B[bb] (;W[dg];B[dh] (;W[ab];B[bd];W[ad];B[ac] (;W[ch];B[eg];W[bc];B[aa] (;W[be];B[ac];W[bh];B[ci];W[ab]C[RIGHT]) (;W[ba];B[ac];W[bh];B[ae] (;W[dg];B[ci];W[be];B[ca]) (;W[ai];B[dg]))) (;W[bh];B[eg];W[bc];B[aa];W[be];B[ac];W[ch]) (;W[eg];B[ae]) (;W[fg];B[eg];W[bc];B[aa];W[be];B[ac];W[fh];B[bd];W[gi];B[ae])) (;W[ad];B[ab];W[db];B[ac]) (;W[bd];B[ab] (;W[ae];B[ac]) (;W[ac];B[ae])) (;W[eg];B[fg];W[ab];B[bd];W[ad];B[ac];W[ch];B[ae];W[bh];B[ci] (;W[fi];B[cg];W[bg];B[be];W[ai];B[di];W[fh];B[ah]) (;W[cg];B[fi];W[be];B[bc];W[ad];B[aa];W[ca];B[da];W[db];B[di];W[ai];B[ee];W[ea];B[ae];W[da];B[ah];W[ad];B[ai];W[ba];B[ae]) (;W[be];B[cg];W[ad];B[bc];W[bg];B[di];W[fi];B[fh];W[ai];B[ee];W[cg];B[ae]))) (;W[ab];B[bd] (;W[dg];B[ae]) (;W[ad];B[ac] (;W[dg];B[ae]) (;W[bh];B[ae];W[ai];B[ch]))) (;W[ad];B[ab]) (;W[be];B[ad]) (;W[bd];B[ab] (;W[ac];B[ae]) (;W[ae];B[ac])) (;W[ch];B[bh];W[dg];B[dh];W[ab];B[bd];W[ad];B[ac] (;W[fg];B[eg];W[bc];B[aa]) (;W[ci];B[eg];W[bc];B[aa]))) (;W[da];B[bb] (;W[dg];B[dh];W[ab];B[bd];W[ad];B[ac];W[ch];B[eg];W[bc];B[aa] (;W[ba];B[ac];W[bh];B[ci];W[bc];B[db];W[eb];B[ac]C[white is dead]) (;W[be];B[ac];W[bh];B[ci];W[ab];B[db];W[ba];B[eb])) (;W[ad];B[ab] (;W[ac];B[be]) (;W[be];B[ac])) (;W[ch];B[dh];W[ab];B[bd];W[ad];B[ac];W[dg];B[eg];W[bc];B[aa] (;W[ba];B[ac];W[bh];B[ci];W[bc];B[db];W[eb];B[ac]C[white is dead]) (;W[be];B[ac];W[bh];B[ci];W[ab];B[db];W[ba];B[eb]))) (;W[ea];B[bb] (;W[ab];B[bd];W[ad];B[ac];W[dg];B[ae];W[fg];B[be] (;W[eg];B[fh];W[dh];B[ch]) (;W[fh];B[eg];W[gi];B[ei]C[black gains too much])) (;W[dg];B[eg];W[ab];B[bd];W[ad];B[ac];W[ch];B[dh];W[bc];B[aa] (;W[ba];B[ac];W[bh];B[ci];W[bc];B[db] (;W[eb];B[ac]C[white is dead]) (;W[be];B[eb])) (;W[be];B[ac];W[bh];B[ci];W[ab];B[da] (;W[ba];B[eb]) (;W[eb];B[ac])))) (;W[ch];B[bh];W[dg];B[dh];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac] (;W[fg];B[eg];W[bc];B[aa]) (;W[ci];B[eg];W[bc];B[aa]))) (;W[cb];B[bc];W[bb];B[bd];W[ac];B[ae]) (;W[db];B[bc]) (;W[bd];B[cb];W[db];B[da];W[eb];B[bc]) (;W[fg];B[eg];W[bc];B[cb];W[db];B[da];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac];W[dg];B[dh];W[bc];B[aa];W[be];B[ac];W[fh];B[bd];W[gi];B[ae]) (;W[ch];B[bh] (;W[bc];B[cb];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac];W[dg];B[ae]) (;W[dg];B[dh];W[bc];B[cb];W[eb];B[bb];W[ab];B[bd];W[ad];B[ac] (;W[fg];B[eg];W[bc];B[aa]) (;W[ci];B[eg];W[bc];B[aa]))) (;W[bb];B[bc]))