invalid problem set
Problem | 3666 |
Created | 2004-01-01 |
Source | Old Chinese Collection? |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 43 secs |
User Attempts |
83 / 1809 |
Solve Ratio Rating | 5 dan |
| rating history |
(;SZ[19]AW[cb]AW[db]AW[ib]AW[jb]AW[lb]AW[bc]AW[ec]AW[fc]AW[gc]AW[jc]AW[lc]AW[hd]AW[id]AW[jf]AW[hi]AW[jj]AB[ea]AB[eb]AB[fb]AB[gb]AB[hb]AB[hc]AB[ic]AB[fd]AB[gd]AB[if]AB[kf]AB[hg]TR[ea]TR[eb]TR[fb]TR[gb]TR[hb]TR[hc]TR[ic]C[Black to save the marked stones.]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]
(;B[jd];W[je]
(;B[kd];W[ie]
(;B[jg];W[hf]
(;B[ig];W[gf]
(;B[fe]
(;W[ef]C[CHOICE]
(;B[eg]
(;W[fg]C[CHOICE]
(;B[fh];W[ff]
(;B[dc];W[ed]
(;B[ee];W[dd]
(;B[de];W[cd]
(;B[df]
(;W[eh]
(;B[he]C[RIGHT])
(;B[dg];W[gh];B[he]C[RIGHT]))
(;W[he];B[gg]C[RIGHT]))
(;B[he]C[RIGHT])
(;B[ke];W[he];B[df];W[eh]))
(;B[he];W[ge]
(;B[de]C[RIGHT])
(;B[ke];W[de])))
(;B[he];W[ge]))
(;B[he];W[ge]))
(;B[ff];W[gg])
(;B[df];W[gg])
(;B[dc];W[ed]
(;B[dd])
(;B[ee];W[dd];B[de];W[cd]
(;B[fh];W[he]
(;B[ke];W[ff];B[df];W[eh])
(;B[ff];W[ke])
(;B[gg];W[ke]))
(;B[he];W[ge];B[ke];W[he];B[gg];W[ff])))
(;B[he];W[ge]
(;B[ke];W[he]
(;B[fh];W[ed])
(;B[ff];W[gg]))
(;B[fh];W[ff])))
(;W[ff];B[dc];W[ed];B[ee];W[dd];B[de];W[cd];B[he];W[ge];B[ke];W[he];B[df]C[RIGHT]))
(;B[dc];W[ed];B[ee];W[dd];B[de];W[cd];B[eg];W[fg]
(;B[fh];W[he]
(;B[ke];W[ff];B[df];W[eh])
(;B[ff];W[ke])
(;B[gg];W[ke]))
(;B[he];W[ge];B[ke];W[he]
(;B[fh];W[df])
(;B[ff];W[gg];B[gh];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dg])))
(;B[ff];W[gg]
(;B[fg];W[gh];B[dc];W[ed];B[dd];W[ee];B[dg];W[eg];B[fh];W[eh];B[fi])
(;B[eg];W[fg]))
(;B[he];W[ge]
(;B[ke];W[he]
(;B[eg];W[ff])
(;B[ff];W[gg])
(;B[dc];W[ed]
(;B[ee];W[dd];B[de];W[cd];B[eg];W[fg]
(;B[fh];W[df])
(;B[ff];W[gg];B[gh];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dg]))
(;B[ff];W[gg])))
(;B[ff];W[gg])))
(;W[fg];B[dc]C[RIGHT])
(;W[ff];B[dc];W[ed];B[ee];W[dd];B[de];W[cd];B[he];W[ge];B[ke];W[he];B[eg]C[RIGHT]))
(;B[he];W[ge];B[ke];W[he]
(;B[fe];W[fg])
(;B[fg];W[ed];B[fe];W[ff];B[ee];W[ef];B[de];W[cd])
(;B[ee];W[ed];B[fe];W[fg]))
(;B[ke];W[he]
(;B[gg];W[ff])
(;B[fe];W[ed])
(;B[ff];W[gg];B[gh];W[fg];B[ef];W[ed])))
(;B[ke];W[ig];B[ih];W[gf];B[if];W[he];B[fe];W[ff])
(;B[fe];W[ef]
(;B[ig];W[gf])
(;B[ke];W[ig];B[ih];W[gf];B[if];W[he];B[ff];W[gg])))
(;B[fe];W[ef];B[jg];W[hf]
(;B[ig];W[gf])
(;B[ke];W[ig];B[ih];W[gf];B[if];W[he];B[ff];W[gg])))
(;B[fe];W[ef]
(;B[kd];W[ie];B[jg];W[hf]
(;B[ig];W[gf])
(;B[ke];W[ig];B[ih];W[gf];B[if];W[he];B[ff];W[gg]))
(;B[eg];W[kd])
(;B[dc];W[ed]
(;B[kd];W[ie];B[jg];W[hf];B[ig];W[gf])
(;B[ee];W[dd];B[de];W[cd];B[kd];W[ie];B[jg];W[hf];B[ig];W[gf]))))
(;B[fe]C[]
(;W[ef]
(;B[jd];W[je]
(;B[kd];W[ie];B[jg];W[hf]
(;B[ig];W[gf]
(;B[eg]
(;W[fg]C[CHOICE]
(;B[fh];W[ff]
(;B[dc];W[ed]
(;B[ee];W[dd]
(;B[de];W[cd]
(;B[df]
(;W[eh]
(;B[he]C[RIGHT])
(;B[dg];W[gh];B[he]C[RIGHT]))
(;W[he];B[gg]C[RIGHT]))
(;B[he]C[RIGHT])
(;B[ke];W[he]))
(;B[he];W[ge]
(;B[de]C[RIGHT])
(;B[ke];W[de])))
(;B[he];W[ge]))
(;B[he];W[ge]))
(;B[ff];W[gg])
(;B[df];W[gg])
(;B[dc];W[ed]
(;B[dd])
(;B[ee];W[dd];B[de];W[cd]
(;B[fh];W[he]
(;B[ke];W[ff];B[df];W[eh])
(;B[ff];W[ke])
(;B[gg];W[ke]))
(;B[he];W[ge];B[ke];W[he];B[gg];W[ff])))
(;B[he];W[ge]
(;B[ke];W[he]
(;B[fh];W[ed])
(;B[ff];W[gg]))
(;B[fh];W[ff])))
(;W[ff];B[dc];W[ed];B[ee];W[dd];B[de];W[cd];B[he];W[ge];B[ke];W[he];B[df]C[RIGHT]))
(;B[dc];W[ed];B[ee];W[dd];B[de];W[cd];B[eg];W[fg]
(;B[fh];W[he]
(;B[ke];W[ff];B[df];W[eh])
(;B[ff];W[ke])
(;B[gg];W[ke]))
(;B[he];W[ge];B[ke];W[he]
(;B[fh];W[df])
(;B[ff];W[gg];B[gh];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dg])))
(;B[ff];W[gg]
(;B[fg];W[gh];B[dc];W[ed];B[dd];W[ee];B[dg];W[eg];B[fh];W[eh];B[fi])
(;B[eg];W[fg]))
(;B[he];W[ge]
(;B[ke];W[he]
(;B[eg];W[ff])
(;B[ff];W[gg])
(;B[dc];W[ed]
(;B[ee];W[dd];B[de];W[cd];B[eg];W[fg])
(;B[ff];W[gg])))
(;B[ff];W[gg])))
(;B[ke];W[ig];B[ih];W[gf];B[if];W[he];B[ff];W[gg]))
(;B[eg];W[kd])
(;B[dc];W[ed]
(;B[kd];W[ie];B[jg];W[hf];B[ig];W[gf];B[ee];W[dd];B[de];W[cd];B[eg];W[fg]
(;B[fh];W[he]
(;B[ke];W[ff];B[df];W[eh])
(;B[ff];W[ke])
(;B[gg];W[ke]))
(;B[he];W[ge];B[ke];W[he]
(;B[fh];W[df])
(;B[ff];W[gg];B[gh];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dg])))
(;B[ee];W[dd];B[de];W[cd];B[kd];W[ie];B[jg];W[hf];B[ig];W[gf];B[eg];W[fg]
(;B[fh];W[he]
(;B[ke];W[ff];B[df];W[eh])
(;B[ff];W[ke])
(;B[gg];W[ke]))
(;B[he];W[ge];B[ke];W[he]
(;B[fh];W[df])
(;B[ff];W[gg];B[gh];W[fh];B[fi];W[eh];B[dh];W[ei];B[ej];W[di];B[ci];W[dg])))))
(;B[dc];W[ed];B[ee];W[dd];B[de];W[cd];B[jd];W[je];B[kd];W[ie];B[jg];W[hf];B[ig];W[gf])
(;B[eg];W[jd])
(;B[ff];W[jd]))
(;W[jd];B[dc];W[ed];B[dd];W[ee];B[ef]C[Just to show why White has to defend on the left.RIGHT]))
(;B[dc];W[ed]
(;B[jd];W[je];B[kd];W[ie]
(;B[jg];W[fe])
(;B[ee];W[dd];B[jg];W[fe];B[ge];W[gf];B[ff];W[hf]
(;B[ig];W[gg])
(;B[gg];W[ig];B[ih];W[ke])))
(;B[ee];W[dd];B[de];W[cd];B[jd];W[je];B[kd];W[ie];B[jg];W[hf];B[ig];W[fe];B[ge];W[gf];B[ff];W[gg]))
(;B[ed];W[dc];B[jd];W[je];B[kd];W[ie];B[jg];W[hf];B[ig];W[gf];B[he];W[ge];B[ke];W[he];B[fg];W[ee])
(;B[ee];W[ed]
(;B[jd];W[je];B[kd];W[ie];B[jg];W[hf];B[ig];W[fe];B[ge];W[gf];B[ff];W[gg])
(;B[fe];W[jd])
(;B[dd];W[dc];B[jd];W[je];B[kd];W[ie];B[jg];W[hf];B[ig];W[fe];B[ge];W[gf];B[ff];W[gg]))
(;B[ge];W[je])
(;B[ff];W[je])
(;B[jg];W[je])
(;B[je];W[jd]))
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