invalid problem set
Problem | 6734 |
Created | 2005-06-20 |
Source | a game |
Rating | |
Difficulty | 6 dan |
Average Solve Time | 47 secs |
User Attempts |
192 / 1687 |
Solve Ratio Rating | 3 dan |
| rating history |
(;AB[cq]AB[bp]AB[cp]AB[br]AB[dr]AB[dp]AB[do]AW[bo]AW[co]AW[cm]AW[dn]AW[en]AW[eo]AW[ep]AW[eq]AW[er]AW[es]AW[aq]C[Black to live unconditionally.]AP[goproblems]
(;B[ds]
(;W[ar]
(;B[ap]
(;W[bs]
(;B[cr]C[sekiRIGHT])
(;B[cs];W[dq]
(;B[as]C[ko])
(;B[cr];W[ao]C[];B[as]C[ko])
(;B[bq];W[cr]))
(;B[dq];W[cs]C[sekiRIGHT])
(;B[bq];W[dq];B[cs];W[cr]))
(;W[dq];B[bs]C[RIGHT])
(;W[cs];B[bs]C[RIGHT])
(;W[cr];B[dq]C[RIGHT]))
(;B[bq];W[ap])
(;B[bs];W[ap])
(;B[cs];W[ap])
(;B[cr];W[ap])
(;B[dq];W[ap])
(;B[as];W[ap]))
(;W[ap]
(;B[ar];W[dq]
(;B[bs];W[ao]
(;B[bq]C[RIGHT])
(;B[cr]C[RIGHT])
(;B[cs];W[bq]))
(;B[cr];W[bs])
(;B[cs];W[ao];B[bq]C[RIGHT])
(;B[bq];W[cs]
(;B[cr];W[bs])
(;B[bs];W[cr])
(;B[ao];W[ap]
(;B[bs];W[cr])
(;B[cr];W[bs]))))
(;B[bs];W[ar])
(;B[cs];W[ar]))
(;W[dq]
(;B[ap];W[bs]
(;B[cr];W[ar]C[sekiRIGHT])
(;B[ar];W[cr];B[cs];W[cr])
(;B[cs];W[cr]))
(;B[ar];W[bs]
(;B[cr];W[ap])
(;B[ap];W[cr];B[cs];W[cr])
(;B[cs];W[cr])
(;B[as];W[cs]
(;B[cr];W[ap])
(;B[ap];W[cr])))
(;B[bs];W[ap]
(;B[ar];W[ao]
(;B[bq]C[RIGHT])
(;B[cr]C[RIGHT])
(;B[cs];W[bq]))
(;B[bq];W[ar]))
(;B[cr];W[ap]
(;B[bs];W[ar])
(;B[ar];W[bs]))
(;B[cs];W[ar]
(;B[bq];W[ap])
(;B[bs];W[ap])
(;B[as];W[ap])
(;B[ap];W[bs]
(;B[cr];W[ao]C[ko];B[as]C[ko])
(;B[as]C[ko]))))
(;W[bs]C[CHOICE]
(;B[ap]
(;W[dq]
(;B[cr];W[ar]C[sekiRIGHT])
(;B[cs];W[cr])
(;B[ar];W[cr];B[cs];W[cr])
(;B[as];W[ar]
(;B[cr]C[seki. Because of the black move at A1 white has a sente seki instead of a gote one.RIGHT])
(;B[cs];W[cr]))
(;B[bq];W[cr];B[cs];W[cr]))
(;W[ar]C[]
(;B[cr]C[sekiRIGHT])
(;B[dq]C[sekiRIGHT];W[cs]C[sekiRIGHT])
(;B[cs];W[dq]
(;B[cr];W[ao]C[ko];B[as]C[ko])
(;B[as]C[ko]))
(;B[bq];W[dq]
(;B[as];W[ar])
(;B[cs];W[cr])))
(;W[cr]
(;B[cs];W[ar]
(;B[bq]C[RIGHT])
(;B[dq]C[RIGHT]))
(;B[dq]C[RIGHT])))
(;B[ar];W[dq]
(;B[cr];W[ap])
(;B[cs];W[cr])
(;B[as];W[cs]
(;B[cr];W[ap])
(;B[ap];W[cr]))
(;B[ap];W[cr];B[cs];W[cr]))
(;B[cs];W[ar]
(;B[as];W[ap])
(;B[ap];W[dq]
(;B[cr];W[ao]C[ko];B[as]C[ko])
(;B[as]C[ko])))
(;B[cr];W[ap])
(;B[dq];W[ap])))
(;B[ap];W[ds]
(;B[ar];W[bs]
(;B[cr];W[cs])
(;B[cs];W[cr]C[ko]))
(;B[bs];W[ar]
(;B[dq];W[cs])
(;B[cs];W[dq]))
(;B[cr];W[cs]
(;B[ar];W[bs])
(;B[bs];W[ar]))
(;B[cs];W[ar]
(;B[bs];W[dq])
(;B[bq];W[dq]
(;B[cr];W[as];B[bs];W[ar])
(;B[as];W[cr]C[ko]))
(;B[cr];W[as])
(;B[dq];W[bs]
(;B[cr];W[ao];B[as]C[ko])
(;B[as]C[ko])))
(;B[dq];W[cs]
(;B[ar];W[bs])
(;B[bs];W[ar]))
(;B[as];W[cs]))
(;B[ar];W[ds]
(;B[ap];W[bs]
(;B[cr];W[cs])
(;B[cs];W[cr]C[ko]))
(;B[cs];W[bs]
(;B[ap];W[cr]C[ko])
(;B[cr];W[ap])
(;B[dq];W[cr]C[ko])
(;B[as];W[dq]
(;B[cr];W[ap])
(;B[ap];W[cr]C[ko])))
(;B[bs];W[ap]
(;B[cs];W[dq])
(;B[dq];W[cs]))
(;B[cr];W[ap])
(;B[dq];W[cs]
(;B[ap];W[bs])
(;B[bs];W[ap])))
(;B[cs];W[ar]
(;B[ap];W[dq]
(;B[as];W[bs]C[two-step ko])
(;B[ds];W[bs]
(;B[cr];W[ao];B[as]C[ko])
(;B[as]C[ko]))
(;B[bs];W[ds])
(;B[bq];W[ds]
(;B[cr];W[as];B[bs];W[ar])
(;B[as];W[cr]C[ko]))
(;B[cr];W[as]))
(;B[bq];W[ap])
(;B[bs];W[ap])
(;B[ds];W[ap])
(;B[dq];W[ap])
(;B[as];W[ap]))
(;B[bs];W[ap]
(;B[ar];W[ds]
(;B[cs];W[dq])
(;B[dq];W[cs]))
(;B[ds];W[ar]))
(;B[cr];W[ap])
(;B[dq];W[ap];B[ar];W[cs];B[ds];W[bs])
(;B[bq];W[ap]
(;B[ar];W[cs]
(;B[ao];W[ap]
(;B[bs];W[ds])
(;B[ds];W[bs]))
(;B[ds];W[bs];B[ao];W[ap])
(;B[bs];W[ds];B[ao];W[ap]))
(;B[cs];W[ar])
(;B[bs];W[ar])))
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