invalid problem set
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life and death
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Problem | 1203 |
Created | 2001-11-21 |
Source | http://www.yomiuri.co.jp/igo_e/ |
Rating | |
Difficulty | 2.2 kyu |
Average Solve Time | 51 secs |
User Attempts |
1037 / 5045 |
Solve Ratio Rating | 1 kyu |
| rating history |
A tricky one.
(
;
FF[4]
GM[1]
SZ[19]
AP[Jago:Version 4.18]
AW[bs][cs][br][bq][bp][cq][dq][eq][fq]
AB[ap][bo][cp][dp][ep][fp][cn][bm][hp][gq][gr][cr][dr][ds]
C[Black to play and kill.]
(
;
B[ar]
;
W[aq]
(
;
B[fs]
;
W[es]
;
B[er]
LB[fr:a]
C[Nice trick. White can't play 'a' due to shortage of liberties. RIGHT]
)
(
;
B[fr]
;
W[er]
)
(
;
B[es]
;
W[fs]
)
(
;
B[er]
;
W[fr]
)
)
(
;
B[aq]
(
;
W[ar]
(
;
B[fs]
;
W[ao]
(
;
B[ap]
;
W[es]
;
B[er]
;
W[fr]
)
(
;
B[fr]
;
W[ap]
)
(
;
B[es]
;
W[ap]
)
)
(
;
B[ao]
;
W[fr]
)
(
;
B[fr]
;
W[er]
)
(
;
B[es]
;
W[fs]
)
(
;
B[er]
;
W[fr]
)
)
(
;
)
)
(
;
B[fs]
;
W[es]
(
;
B[er]
;
W[fr]
(
;
B[aq]
;
W[es]
(
;
B[ar]
;
W[dr]
)
(
;
B[dr]
;
W[ar]
)
)
(
;
B[ar]
;
W[es]
(
;
B[dr]
;
W[aq]
)
(
;
B[aq]
;
W[dr]
)
)
)
(
;
B[aq]
;
W[er]
(
;
B[dr]
;
W[ar]
)
(
;
B[ar]
;
W[dr]
)
)
(
;
B[ar]
;
W[er]
(
;
B[dr]
;
W[aq]
)
(
;
B[aq]
;
W[dr]
)
)
)
(
;
B[fr]
;
W[er]
)
(
;
B[es]
;
W[fs]
)
(
;
B[er]
;
W[fr]
)
)
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