invalid problem set
Problem | 15852 |
Created | 2012-02-13 |
Source | Pairgo championship |
Rating | |
Difficulty | 9 dan |
Average Solve Time | 81 secs |
User Attempts |
11 / 234 |
Solve Ratio Rating | 5 dan |
| rating history |
You lose any ko!
(;AW[qc]AW[rc]AW[pb]AW[nb]AW[mc]AW[lc]AW[le]AW[ke]AW[kf]AW[jf]AW[kg]AW[jg]AW[lg]AW[lf]AW[je]AB[rd]AB[qd]AB[pd]AB[nd]AW[ld]AB[jc]AB[lb]AB[kb]AB[jd]AB[ie]AB[he]AB[hg]AB[ig]AB[ih]AB[jh]AB[ji]AB[lh]AB[li]AB[mh]AB[mg]AB[ng]AB[me]AB[ne]AB[jb]AB[pe]C[Black to play and do good without ko.]AP[goproblems]
(;B[rb];W[sb];B[ob];W[oa]
(;B[oc];W[ra])
(;B[ra];W[oc]))
(;B[ob]
(;W[oa];B[oc]C[RIGHT])
(;W[oc]C[CHOICE]
(;B[rb]
(;W[sb];B[nc];W[mb];B[pc];W[oa];B[qb]C[RIGHT])
(;W[oa];B[sc]C[RIGHT])
(;W[qb]
(;B[sc]
(;W[oa];B[qa]C[RIGHT])
(;W[qa]
(;B[nc];W[mb];B[oa]C[CHOICERIGHT])
(;B[oa]TR[nc]TR[sb]C[RIGHT])))
(;B[nc];W[mb]
(;B[oa]
(;W[pa]
(;B[pc];W[na];B[sc];W[sb]
(;B[sa];W[ra])
(;B[ra];W[ob]))
(;B[sc];W[sb]
(;B[ra];W[na])
(;B[sa];W[ra])))
(;W[pc];B[sc]))
(;B[sc];W[qa];B[oa]C[CHOICERIGHT]))))
(;B[nc];W[mb]
(;B[pc];W[oa];B[rb];W[qb];B[sc];W[qa];B[sb];W[ma])
(;B[rb];W[sb];B[pc];W[oa];B[qb]C[RIGHT]))
(;B[pc];W[oa];B[rb];W[qb];B[sc];W[qa];B[sb];W[nc])))
(;B[pc];W[rb];B[ob];W[oa];B[oc];W[qa])
(;B[nc];W[mb]
(;B[ob];W[oc]
(;B[pc];W[oa];B[rb];W[qb];B[sc];W[qa];B[sb];W[ma])
(;B[rb]C[];W[sb]))
(;B[rb];W[sb];B[ob];W[oa];B[ra];W[oc];B[pc];W[qb];B[qa];W[ma]))
(;B[sc];W[sb])
(;B[mb];W[nc];B[rb];W[sb]))
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