invalid problem set
Problem | 21399 |
Created | 2017-05-18 |
Name | Q6 第å…番 |
Source | Original (オリジナル) |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 17 secs |
User Attempts |
6 / 92 |
Solve Ratio Rating | 5 dan |
| rating history |
6. Two step Ko, advantageous for white
(白有利ãªï¼‘手ヨセ劫).
Difficulty level 3 at mimura15.jp
(;AW[ap]AW[ar]AW[cs]AW[er]AW[ep]AW[co]AB[bn]AB[cn]AB[dn]AB[eo]AB[fo]AB[fp]AB[fq]AB[fr]AB[hr]AP[goproblems]
(;B[cr];W[cq]
(;B[br];W[dr]
(;B[bs];W[bq];B[ds];W[es]
(;B[bo]C[RIGHT])
(;B[dq]C[RIGHT])
(;B[eq];W[dq])
(;B[dp];W[dq]))
(;B[bq];W[bp]
(;B[dq];W[cp])
(;B[bs];W[aq];B[ds];W[as])))
(;B[dr];W[eq]
(;B[dq];W[dp]
(;B[bq];W[br];B[cp];W[ds])
(;B[br];W[ds];B[bq];W[cp];B[aq];W[bp];B[as];W[es]))
(;B[es];W[br]
(;B[ds];W[bs];B[cp];W[dp])
(;B[bs];W[dq];B[ds];W[do]
(;B[bp];W[bo]
(;B[bq];W[cp])
(;B[cp];W[bq]))
(;B[bo];W[bp])))
(;B[br];W[ds]
(;B[dq];W[dp];B[bq];W[cp];B[aq];W[bp];B[as];W[es])
(;B[bq];W[cp];B[aq];W[bp])
(;B[bs];W[es]
(;B[dq];W[dp];B[bq];W[cp])
(;B[bq];W[cp]))
(;B[dp];W[dq]))
(;B[bq];W[br];B[dq];W[dp];B[cp];W[ds])
(;B[ds];W[es];B[bq];W[br];B[bs];W[dq])
(;B[bs];W[br];B[es];W[dq];B[ds];W[do]
(;B[bp];W[bo]
(;B[bq];W[cp])
(;B[cp];W[bq]))
(;B[bo];W[bp])))
(;B[ds];W[es];B[bs];W[br])
(;B[bs];W[br];B[ds];W[dr];B[es];W[dp];B[eq];W[dq]
(;B[cs];W[bp])
(;B[bq];W[bp])))
(;B[cq];W[bq]
(;B[cr];W[cp]
(;B[eq];W[br])
(;B[bo];W[dq])
(;B[br];W[dq])
(;B[dp];W[br]))
(;B[bp];W[bo];B[cp];W[cr])
(;B[cp];W[cr])
(;B[br];W[cr]))
(;B[bq];W[cq]
(;B[br];W[bp];B[cr];W[dr]
(;B[dq];W[cp])
(;B[bs];W[aq];B[ds];W[as]))
(;B[bp];W[bo]
(;B[cp];W[br]
(;B[dp];W[dq])
(;B[dq];W[dp];B[cr];W[aq]))
(;B[br];W[cp])))
(;B[br];W[cr]
(;B[bq];W[cp];B[bs];W[cq];B[bo];W[bp]
(;B[eq];W[es])
(;B[es];W[eq]))
(;B[bp];W[bq]))
(;B[bs];W[cq]
(;B[br];W[cr];B[bq];W[bp];B[dp];W[es])
(;B[cr];W[br];B[ds];W[dr];B[es];W[dp];B[eq];W[dq]
(;B[cs];W[bp])
(;B[bq];W[bp])))
(;B[bp];W[bq];B[cp];W[cr]
(;B[eq];W[bs])
(;B[bs];W[es]))
(;B[cp];W[cq])
(;B[bo];W[cq])
(;B[dp];W[cq])
(;B[do];W[cq])
(;B[dq];W[cq])
(;B[dr];W[cr])
(;B[eq];W[cq]))
Toggle next/previous buttons