invalid problem set
Problem | 14293 |
Created | 2010-12-23 |
Name | 7X7 go board problem #3 |
Source | |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 67 secs |
User Attempts |
15 / 167 |
Solve Ratio Rating | 4 dan |
| rating history |
white should lose 8 points or less(or win). see also my previous problems. probably there are some missing variations. please comment.
(;SZ[7]AB[dd]AB[de]AB[ec]AB[eb]AB[cf]AW[ce]AW[cd]AW[dc]AW[cc]AP[goproblems]
(;W[bf];B[df]
(;W[db];B[bg];W[af];B[da];W[ca];B[ea])
(;W[ed]
(;B[fd]C[CHOICE];W[ee];B[ef]
(;W[fe];B[ff]
(;W[db];B[bg]
(;W[ea];B[fa];W[da];B[be]LB[bd:A];W[bd];B[af];W[fc];B[ge];W[fb];B[ed]
(;W[bb]
(;B[gc];W[ga];B[ad];W[ac];B[ae]C[RIGHT])
(;B[gb];W[ga];B[ad]
(;W[gc];B[ab];W[ac];B[bc];W[aa];B[ba];W[ac]C[RIGHT])
(;W[ac];B[fa];W[ae];B[gc];W[bf];B[cg];W[ag]C[RIGHT])))
(;W[ga]
(;B[gc];W[bb];B[ad];W[ac];B[ae]C[RIGHT])
(;B[ab];W[bb];B[ad];W[ac];B[bc];W[aa];B[ba];W[ac]C[RIGHT])
(;B[bb]
(;W[ab];B[gc];W[ba];B[ac];W[ad];B[aa];W[bc];B[ca];W[cb]C[RIGHT])
(;W[gc];B[ab];W[ac];B[ba])))
(;W[gc];B[bb]
(;W[ab];B[ac]
(;W[bc];B[ga]
(;W[ba];B[aa]
(;W[gb];B[ca];W[ad];B[fa];W[ab];B[ae];W[ba];B[gd];W[cb];B[ga];W[fb];B[gb];W[gc];B[fc])
(;W[ad];B[ca];W[gb];B[fa];W[ab];B[ae];W[ba];B[gd];W[cb];B[ga];W[fb];B[gb];W[gc];B[fc]))
(;W[ad];B[ba]))
(;W[ad];B[ba];W[bc];B[ga]))
(;W[ga];B[ab];W[ac];B[ba])))
(;W[fc];B[ge];W[ea];B[fa];W[da];B[be]LB[bd:A];W[bd];B[af];W[fb];B[ed]
(;W[bb]
(;B[gc];W[ga];B[ad];W[ac];B[ae]C[RIGHT])
(;B[gb];W[ga];B[ad]
(;W[gc];B[ab];W[ac];B[bc];W[aa];B[ba];W[ac]C[RIGHT])
(;W[ac];B[fa];W[ae];B[gc];W[bf];B[cg];W[ag]C[RIGHT])))
(;W[ga]
(;B[gc];W[bb];B[ad];W[ac];B[ae]C[RIGHT])
(;B[ab];W[bb];B[ad];W[ac];B[bc];W[aa];B[ba];W[ac]C[RIGHT])
(;B[bb]
(;W[ab];B[gc];W[ba];B[ac];W[ad];B[aa];W[bc];B[ca];W[cb]C[RIGHT])
(;W[gc];B[ab];W[ac];B[ba])))
(;W[gc];B[bb]
(;W[ab];B[ac]
(;W[bc];B[ga]
(;W[ba];B[aa]
(;W[gb];B[ca];W[ad];B[fa];W[ab];B[ae];W[ba];B[gd];W[cb];B[ga];W[fb];B[gb];W[gc];B[fc])
(;W[ad];B[ca];W[gb];B[fa];W[ab];B[ae];W[ba];B[gd];W[cb]))
(;W[ad];B[ba]))
(;W[ad];B[ba];W[bc];B[ga]))
(;W[ga];B[ab];W[ac];B[ba]))))
(;W[fc];B[ge];W[db];B[bg];W[ea];B[fa];W[da];B[be]LB[bd:A];W[bd];B[af]))
(;W[fc];B[fe];W[db];B[bg];W[ea];B[fa];W[da];B[be]LB[bd:A];W[bd];B[af];W[fb];B[ed]
(;W[bb];B[gc];W[ga];B[ad];W[ac];B[ae]C[RIGHT])
(;W[ga];B[gc];W[bb];B[ad];W[ac];B[ae]C[RIGHT])
(;W[gc];B[bb]
(;W[ab];B[ac];W[bc];B[ga];W[ba];B[aa];W[gb];B[ca];W[ad];B[fa];W[ab];B[ae];W[ba];B[gd];W[cb];B[ga];W[fb];B[gb];W[gc];B[fc])
(;W[ga];B[ab];W[ac];B[ba]))))
(;B[db]C[black wins 8 points. see '7X7 go board problem #1'RIGHT])
(;B[bg]C[black wins 7 points. see '7X7 go board problem #2'RIGHT])
(;B[da];W[ee];B[ef];W[ff];B[fg];W[fe];B[bg];W[fc];B[fb];W[gd];B[be];W[bd];B[af];W[db];B[ca];W[bb]
(;B[ba];W[gb];B[ac];W[ea];B[fa];W[gc]C[RIGHT])
(;B[gb];W[gc];B[ba];W[fa];B[ea];W[ac]
(;B[ae];W[gf]C[RIGHT])
(;B[gf];W[aa];B[ab];W[cb]C[RIGHT])))
(;B[ca];W[ee];B[ef];W[ff];B[fg];W[fe];B[bg];W[fc];B[fb];W[gd];B[be];W[bd];B[af];W[db];B[da];W[bb]
(;B[ba];W[gb];B[ac];W[ea];B[fa];W[gc]C[RIGHT])
(;B[gb];W[gc];B[ba];W[fa];B[ea];W[ac]
(;B[ae];W[gf]C[RIGHT])
(;B[gf];W[aa];B[ab];W[cb]C[RIGHT])))
(;B[ba];W[fd];B[ee];W[db];B[da];W[fb]C[RIGHT])))
(;W[db];B[ef];W[bf];B[bg];W[af];B[da];W[ca];B[ea])
(;W[ed];B[ef]
(;W[fd];B[db];W[bf];B[bg];W[ff];B[be];W[af];B[ae];W[cb];B[fc];W[eg];B[df];W[fe];B[bd])
(;W[ee];B[df]
(;W[ff];B[fc]
(;W[fe];B[bf])
(;W[bf];B[fe];W[db];B[bg];W[cg];B[dg];W[af];B[da];W[ca];B[ea];W[bd];B[fd];W[bb]C[black wins 9 points.]))
(;W[fc];B[fb];W[ff];B[gc]
(;W[fe];B[bf])
(;W[bf];B[fe];W[db];B[bg];W[cg];B[dg];W[af];B[da];W[ca];B[ea];W[bb];B[fd];W[bd]C[black wins 9 points.])))
(;W[bf];B[bg]
(;W[ee];B[df]
(;W[ff];B[fc];W[fe];B[be];W[af];B[ae];W[eg];B[ag]
(;W[dg];B[fg];W[gg];B[ge])
(;W[bf];B[af];W[dg];B[fg];W[gg];B[ge]))
(;W[fc];B[fb];W[ff];B[gc];W[fe];B[be];W[gd];B[fd];W[af];B[ge];W[bd];B[fg];W[db];B[da];W[ca];B[ea]))
(;W[df];B[dg];W[ee];B[df]
(;W[ff];B[fc];W[fe];B[be])
(;W[fc];B[fb];W[ff];B[gc];W[fe];B[be];W[gd];B[fd];W[af];B[ge];W[bd];B[fg];W[db];B[da];W[ca];B[ea]))
(;W[fd];B[db];W[ff];B[be];W[af];B[ae];W[cb];B[fc];W[eg];B[df];W[fe];B[bd])
(;W[fe];B[db];W[ff];B[be];W[af];B[ae];W[cb];B[fc];W[eg];B[df]
(;W[dg];B[fg];W[gg];B[fd];W[ee];B[ag];W[ge];B[bb])
(;W[fd];B[bd])))
(;W[db];B[fd];W[bf];B[bg];W[af];B[da];W[ca];B[ea])
(;W[fe]
(;B[ff];W[fc];B[fb]
(;W[gb];B[db]
(;W[cb];B[ee];W[fd];B[ge];W[da];B[gc];W[bf];B[bg])
(;W[gf];B[cb];W[bf];B[bg]))
(;W[db];B[ee];W[fd];B[gc];W[ea];B[be]))
(;B[db];W[bf];B[bg];W[ff];B[be];W[cb];B[fc];W[af];B[ae];W[eg];B[df]
(;W[fd];B[bd])
(;W[dg];B[fg];W[gg];B[fd];W[ee];B[ag];W[ge];B[bb]))))
(;W[df];B[ef];W[ed];B[dg];W[ee];B[df]
(;W[ff];B[fc];W[fe];B[be])
(;W[fc];B[fb];W[ff];B[gc];W[fe];B[be];W[gd];B[fd];W[bf];B[bg];W[fc];B[db];W[cb];B[fd];W[af];B[ge])))
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