invalid problem set
Problem | 14787 |
Created | 2011-05-07 |
Source | |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 88 secs |
User Attempts |
14 / 180 |
Solve Ratio Rating | 4 dan |
| rating history |
save the marked stones.
black has an external ko threat.
(;AB[dc]AB[ed]AW[fc]AW[fd]AB[fe]AW[ee]AB[de]AW[ef]AW[eg]AW[dg]AB[df]AB[cg]AB[ce]AB[be]AB[bg]AW[db]AB[cb]AB[fb]AW[ca]AB[bb]AB[ge]AB[hd]AW[gg]AW[gf]AW[ch]AW[bh]AB[af]AB[nc]AB[nd]AW[hc]AW[ic]AW[jc]AB[kc]AB[kd]AB[je]AB[if]AW[ec]AB[dd]AW[cc]AB[bc]TR[ec]TR[fc]TR[fd]TR[db]TR[hc]TR[ic]TR[jc]AW[di]AP[goproblems]
(;W[gb];B[eb];W[ea];B[da])
(;W[eb];B[gb]
(;W[gc];B[jb];W[ib];B[kb]
(;W[da];B[fa];W[ha];B[ga])
(;W[ia];B[fa])
(;W[ga];B[ia]))
(;W[hb];B[gc])
(;W[fa];B[gc])
(;W[ga];B[gc])
(;W[gd];B[he]
(;W[hb];B[jb];W[ib];B[kb]
(;W[ia];B[ga])
(;W[da];B[fa]))
(;W[gc];B[jb];W[ib];B[kb]
(;W[ia];B[fa])
(;W[da];B[fa]))
(;W[fa];B[da];W[hb];B[jb];W[ib];B[kb];W[ia];B[ga])
(;W[da];B[gc])
(;W[ga];B[jb];W[ib];B[kb]
(;W[ia];B[fa];W[hb];B[ha])
(;W[da];B[ha];W[fa];B[ia];W[hb];B[ea];W[ga];B[ja];W[gc];B[fa];W[ga];B[fa];W[fb];B[gb])))
(;W[he];B[hf]
(;W[gc];B[jb];W[ib];B[kb]
(;W[ia];B[fa])
(;W[da];B[fa];W[ha];B[ga]))
(;W[fa];B[da];W[gc];B[jb])
(;W[hb];B[jb];W[ib];B[kb]
(;W[ia];B[ga])
(;W[da];B[fa]))
(;W[ga]
(;B[jb]C[CHOICE];W[ib];B[kb]
(;W[ia]
(;B[fa]C[CHOICE];W[hb];B[ha]
(;W[gd];B[ie];W[ga]C[RIGHT])
(;W[ff];B[ie];W[ga]C[RIGHT])
(;W[id];B[ie];W[ga]C[RIGHT]))
(;B[hb];W[da]C[RIGHT]))
(;W[da];B[ha]
(;W[gd];B[ie];W[fa];B[ea]
(;W[ga];B[gc];W[fa];B[ea];W[fa];B[ba])
(;W[hb];B[ia];W[ga];B[ja];W[gc];B[fa];W[ga];B[fa];W[fb];B[gb];W[ff];B[he];W[ga];B[ih]C[ko threat.FORCE]LB[jh:A];W[jh];B[gb])
(;W[ia];B[gc];W[fa];B[ba]))
(;W[fa];B[ea];W[gd];B[ie]
(;W[hb];B[ia];W[ga];B[ja];W[gc];B[fa];W[ga];B[fa];W[fb];B[gb];W[ff];B[he];W[ga];B[ih]C[ko threat.FORCE]LB[jh:A];W[jh];B[gb])
(;W[ga];B[gc];W[fa];B[ea];W[fa];B[ba])
(;W[ia];B[gc];W[fa];B[ba]))))
(;B[hb];W[gc];B[kb];W[ia];B[jb];W[ib];B[da];W[ea]C[RIGHT]))
(;W[gd];B[ie];W[ga];B[jb];W[ib];B[kb]
(;W[ia];B[fa];W[hb];B[ha];W[ff];B[he];W[ga];B[ih]C[ko threatFORCE]LB[jh:A];W[jh];B[ha])
(;W[da];B[ha];W[fa];B[ea]
(;W[ga];B[gc];W[fa];B[ea];W[fa];B[ba])
(;W[hb];B[ia];W[ga])
(;W[ia];B[gc];W[fa];B[ba])))
(;W[kb];B[gc];W[gd];B[ie])
(;W[jb];B[gc];W[gd];B[ie])
(;W[da];B[gc];W[gd];B[ie])))
(;W[he];B[eb];W[id];B[gc]))
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