invalid problem set
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life and death
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Problem | 60 |
Created | 1999-08-18 |
Source | pamphlet |
Rating | |
Difficulty | 4.1 dan |
Average Solve Time | 30 secs |
User Attempts |
706 / 5408 |
Solve Ratio Rating | 2 dan |
| rating history |
(;GM[1]FF[3]
RU[Japanese]SZ[19]HA[0]KM[5.5]
PW[White]
PB[Black]
GN[White (W) vs. Black (B)]
DT[1999-07-28]
SY[Cgoban 1.9.2]TM[30:00(5x1:00)];
AW[nb][mc][nc][oc][pd][rd][ne][pe][re][pf]AB[lb][mb][pb][sb][lc][pc][md][qd]C[black to live in the corner
]
(;B[pa]
;W[na]
(;B[ra]
;W[rc]
(;B[rb]C[RIGHT
])
(;B[qb]
;W[rb]))
(;B[rc]
;W[ra]
(;B[qa]
;W[rb])
(;B[rb]
;W[qa]))
(;B[rb]
;W[ra]
(;B[qc]
;W[qa])
(;B[qa]CR[qa]
;W[qc]CR[qc])))
(;B[oa]
;W[na]
(;B[ra]
;W[rc]
;B[rb]
;W[pa]
(;B[qa]
;W[ob]
(;B[pa]
;W[qc])
(;B[qc]
;W[pa]))
(;B[ob]
;W[qb]
(;B[qc]
;W[qe])
(;B[qa]
;W[qc])))
(;B[rb]
;W[ob]
(;B[ra]
;W[pa]
;B[qa]
;W[oa]
(;B[rc]
;W[qc])
(;B[qc]
;W[rc]))
(;B[pa]
;W[ra]
(;B[rc]
;W[qa])
(;B[qc]
;W[qa])))
(;B[rc]CR[rc]
;W[ra]CR[ra]
(;B[qa]CR[qa]
;W[ob]CR[ob]
(;B[rb]CR[rb]
;W[qc]CR[qc])
(;B[qc]CR[qc]
;W[rb]CR[rb]))
(;B[ob]CR[ob]
;W[qa]CR[qa])
(;B[qc]CR[qc]
;W[qa]CR[qa])))
(;B[ra]
;W[rc]
(;B[pa]
;W[qb]
(;B[qa]
;W[na])
(;B[na]
;W[qa])
(;B[qc]
;W[rb]
(;B[qa]
;W[na])
(;B[na]
;W[qa]))
(;B[rb]
;W[qc]
;B[na]
;W[qa]))
(;B[rb]
;W[pa]
(;B[oa]
;W[na]
(;B[qa]
;W[qc]CR[qc])
(;B[ob]
;W[qb]
(;B[qa]
;W[qc])
(;B[qc]CR[qc]
;W[qe]CR[qe])))
(;B[qa]
;W[oa])
(;B[ob]CR[ob]
;W[oa]CR[oa]
;B[qa]CR[qa]
;W[na]CR[na])))
(;B[ob]CR[ob]
;W[na]CR[na]
(;B[ra]CR[ra]
;W[rc]CR[rc]
(;B[rb]CR[rb]
;W[qb]CR[qb]
(;B[qc]CR[qc]
;W[pa]CR[pa]
(;B[qa]CR[qa]
;W[oa]CR[oa])
(;B[oa]CR[oa]
;W[qe]CR[qe]))
(;B[qa]CR[qa]
;W[qc]CR[qc]))
(;B[oa]CR[oa]
;W[rb]CR[rb])
(;B[qb]CR[qb]
;W[rb]CR[rb])
(;B[qc]CR[qc]
;W[rb]CR[rb])
(;B[pa]CR[pa]
;W[rb]CR[rb]))
(;B[rc]CR[rc]
;W[qb]CR[qb]
(;B[qa]CR[qa]
;W[ra]CR[ra]
(;B[rb]CR[rb]
;W[pa]CR[pa])
(;B[pa]CR[pa]
;W[rb]CR[rb])
(;B[qc]CR[qc]
;W[pa]CR[pa]))
(;B[oa]CR[oa]
;W[qc]CR[qc])
(;B[rb]CR[rb]
;W[qa]CR[qa]
;B[ra]CR[ra]
;W[pa]CR[pa]))
(;B[oa]CR[oa]
;W[qb]CR[qb]
(;B[qc]CR[qc]
(;W[rb]CR[rb]
;B[rc]CR[rc]
;W[qa]CR[qa]
;B[ra]CR[ra]C[Only ko])
(;W[qa]CR[qa]
(;B[ra]CR[ra]
;W[rb]CR[rb]
;B[rc]CR[rc]
;W[sa]CR[sa]C[ko])
(;B[rc]CR[rc]
;W[ra]CR[ra])
(;B[rb]CR[rb]
;W[ra]CR[ra])))
(;B[rc]CR[rc]
;W[qc]CR[qc])
(;B[qa]CR[qa]
;W[qc]CR[qc])
(;B[rb]CR[rb]
;W[qc]CR[qc]))
(;B[rb]CR[rb]
;W[qc]CR[qc]
(;B[qb]CR[qb]
;W[oa]CR[oa]
(;B[pa]CR[pa]
;W[ra]CR[ra])
(;B[ra]CR[ra]
;W[pa]CR[pa]))
(;B[rc]CR[rc]
;W[oa]CR[oa]
;B[pa]CR[pa]
;W[ra]CR[ra])
(;B[ra]CR[ra]
;W[qb]CR[qb])))
(;B[rc]CR[rc]
;W[ra]CR[ra]
(;B[oa]CR[oa]
;W[na]CR[na]
(;B[ob]CR[ob]
;W[qa]CR[qa])
(;B[qa]CR[qa]
;W[ob]CR[ob]
(;B[rb]CR[rb]
;W[qc]CR[qc])
(;B[qc]CR[qc]
;W[rb]CR[rb])))
(;B[pa]CR[pa]
;W[na]CR[na]
(;B[rb]CR[rb]
;W[qc]CR[qc])
(;B[qa]CR[qa]
;W[qc]CR[qc]))
(;B[qa]CR[qa]
;W[oa]CR[oa]
(;B[rb]CR[rb]
;W[qc]CR[qc])
(;B[qc]CR[qc]
;W[rb]CR[rb]))
(;B[rb]CR[rb]
;W[qa]CR[qa]))
(;B[na]CR[na]
;W[oa]CR[oa]
(;B[pa]CR[pa]
;W[ob]CR[ob]
(;B[ra]CR[ra]
;W[qb]CR[qb]
(;B[qc]CR[qc]
;W[rc]CR[rc]
;B[rb]CR[rb]C[RIGHT])
(;B[rc]CR[rc]
;W[qc]CR[qc])
(;B[rb]CR[rb]
;W[qc]CR[qc]))
(;B[rb]CR[rb]
;W[qc]CR[qc]
(;B[qb]CR[qb]
;W[ra]CR[ra])
(;B[ra]CR[ra]
;W[qb]CR[qb]))
(;B[rc]CR[rc]
;W[ra]CR[ra]))
(;B[ob]CR[ob]
;W[ma]CR[ma]
;B[pa]CR[pa]
;W[rc]CR[rc]C[Black can get only a ko this way.])
(;B[qa]CR[qa]
;W[rc]CR[rc])
(;B[rc]CR[rc]
;W[ra]CR[ra])
(;B[rb]CR[rb]
;W[qc]CR[qc]
(;B[pa]CR[pa]
;W[ma]CR[ma]
;B[qb]CR[qb]
;W[ra]CR[ra])
(;B[qb]CR[qb]
;W[ra]CR[ra])))
(;B[rb]CR[rb]
;W[na]CR[na]
(;B[pa]CR[pa]
;W[qc]CR[qc]
;B[qb]CR[qb]
;W[ra]CR[ra])
(;B[qc]CR[qc]
;W[qa]CR[qa])
(;B[ra]CR[ra]
;W[rc]CR[rc])))
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