Problem | 7131 |
Created | 2005-08-22 |
Source | Encyclopedia of Life and Death |
Rating | |
Difficulty | 14.7 kyu |
Average Solve Time | 30 secs |
User Attempts |
4985 / 10791 |
Solve Ratio Rating | 8 kyu |
| rating history |
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[White]PB[Black]AW[aa][fa][bb][fb][ec][fc][bd][dd][be][ce][de]AB[da][cb][bc][cc][dc][ad][cd]C[Black to play]
(;B[ba]CR[ba]
;W[ca]CR[ca]
(;B[ab]CR[ab]
;W[ac]CR[ac]
;B[ba]CR[ba]C[RIGHT Black lives in double ko])
(;B[eb]CR[eb]
;W[ba]CR[ba]
;B[ab]CR[ab]
;W[ba]CR[ba]C[Dead]))
(;B[eb]CR[eb]
;W[ae]CR[ae]
(;B[ba]CR[ba]
;W[ca]CR[ca]C[Ko])
(;B[ea]CR[ea]
;W[ca]CR[ca]C[Ko])
(;B[ac]CR[ac]
;W[ea]CR[ea]
;B[ba]CR[ba]
;W[ca]CR[ca]C[Ko])
(;B[ab]CR[ab]
;W[ac]CR[ac]
;B[ba]CR[ba]
;W[ca]CR[ca]C[Ko]))
(;B[ab]CR[ab]
;W[ba]CR[ba]
(;B[ca]CR[ca]
;W[ba]CR[ba]C[Dead])
(;B[ea]CR[ea]
;W[eb]CR[eb]C[Dead])
(;B[eb]CR[eb]
;W[ea]CR[ea]C[Dead]))
(;B[ca]CR[ca]
;W[ab]CR[ab]C[Dead])
(;B[ac]CR[ac]
;W[ba]CR[ba]C[Dead]))
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