invalid problem set
Problem | 3901 |
Created | 2004-02-09 |
Source | |
Rating | |
Difficulty | 16.5 kyu |
Average Solve Time | 36 secs |
User Attempts |
6999 / 15971 |
Solve Ratio Rating | 7 kyu |
| rating history |
Black to kill white's corner group
(;AB[rb]AB[qc]AB[pc]AB[pd]AB[pe]AB[pf]AB[pg]AW[qd]AW[qe]AW[rc]AW[qb]AW[sb]AB[nc]AB[rh]AB[ph]AW[kc]AW[kb]AP[goproblems]
(;B[ra];W[qa]
(;B[rd];W[sa]
(;B[re];W[ob]
(;B[pb]C[RIGHT])
(;B[nb];W[pb]
(;B[oa]C[RIGHT])
(;B[rb]C[NOTTHIS]))
(;B[oc];W[pb]
(;B[nb];W[oa])
(;B[rb]C[NOTTHIS]))
(;B[oa];W[nb]
(;B[pb];W[pa]
(;B[mb]C[];W[na]
(;B[ma];W[mc]
(;B[oc];W[oa];B[lc];W[md]
(;B[ld];W[lb])
(;B[lb];W[ld];B[rb];W[ra];B[sd];W[la]))
(;B[lc];W[md]
(;B[oc];W[oa]
(;B[lb];W[ld];B[rb];W[ra];B[sd];W[la])
(;B[ld];W[lb]))
(;B[lb];W[ld])
(;B[ld];W[lb])))
(;B[mc];W[ma])
(;B[oc];W[mc]
(;B[ma];W[oa];B[lc];W[md]
(;B[ld];W[lb])
(;B[lb];W[ld]))
(;B[lc];W[md]
(;B[ld];W[lb])
(;B[lb];W[ld])
(;B[ma];W[oa]
(;B[ld];W[lb])
(;B[lb];W[ld];B[rb];W[ra];B[sd];W[la])
(;B[rb];W[ra];B[sd];W[lb]))
(;B[rb]C[NOTTHIS]))
(;B[rb]C[NOTTHIS]))
(;B[rb]C[NOTTHIS]))
(;B[mc];W[mb];B[lb])
(;B[rb]C[NOTTHIS]))
(;B[rb]C[NOTTHIS]))
(;B[rb]C[NOTTHIS])
(;B[mb];W[pb];B[oa];W[nb];B[na];W[mc]C[White escapes.]))
(;B[pb];W[re])
(;B[rb];W[ra]
(;B[re];W[ob]
(;B[pb]C[RIGHT])
(;B[nb];W[oa];B[pb]C[RIGHT])
(;B[oc];W[pb]))
(;B[pb];W[re])
(;B[sd];W[re])
(;B[se];W[re]
(;B[sf];W[sd])
(;B[sd];W[sf])
(;B[rf];W[sd]))
(;B[rf];W[re])
(;B[sf];W[re]))
(;B[sd];W[re]))
(;B[pb];W[sa]
(;B[rd];W[re])
(;B[re];W[rd];B[sd];W[rf])
(;B[sd];W[rf]
(;B[sf];W[sg];B[se];W[rg])
(;B[rd];W[re])
(;B[sc];W[se]))
(;B[se];W[sd])
(;B[rf];W[re])
(;B[rb];W[re]C[Two eyes easily]))
(;B[re];W[rd]
(;B[sd];W[rf]
(;B[sf];W[sg])
(;B[qf];W[se]))
(;B[rf];W[sd])
(;B[qf];W[rf]))
(;B[se];W[sd])
(;B[sd];W[rf];B[rd];W[sa];B[rb];W[ra]
(;B[sc];W[se]C[ko])
(;B[sf];W[sg]
(;B[sc];W[se]C[ko])
(;B[se];W[re])))
(;B[sc];W[sd]
(;B[re];W[rf])
(;B[pb];W[sa])))
(;B[rd];W[ra]C[White has two eyes in the corner.]TR[rb]TR[sa])
(;B[pb];W[ra])
(;B[qa];W[ra]
(;B[pa];W[pb])
(;B[pb];W[pa]))
(;B[re];W[rd];B[ra];W[qa];B[sd];W[rf]
(;B[sf];W[sg])
(;B[qf];W[se]))
(;B[sd];W[ra]
(;B[sc];W[se])
(;B[sf];W[sc])))
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