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life and death
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Problem | 13861 |
Created | 2010-07-28 |
Name | Comb patterns, Pattern 16 |
Source | All about life and death, Cho Chikun |
Rating | |
Difficulty | 16.1 kyu |
Average Solve Time | 31 secs |
User Attempts |
2830 / 6883 |
Solve Ratio Rating | 7 kyu |
| rating history |
White to play, Black dies
(;AB[sr]AB[rr]AB[qq]AB[pq]AB[oq]AB[nq]AW[mr]AW[mq]AW[mp]AW[np]AW[op]AW[pp]AW[qp]AW[rp]AW[rq]AP[goproblems]
(;W[ps];B[qs]
(;W[os]C[RIGHT])
(;W[pr];B[or];W[os];B[ns])
(;W[ns]C[RIGHT])
(;W[or];B[pr]
(;W[ns];B[os]C[Ko])
(;W[nr];B[os])
(;W[os];B[nr]))
(;W[nr];B[os];W[or];B[pr])
(;W[rs];B[os]
(;W[qr];B[pr]
(;W[nr];B[qs])
(;W[qs];B[nr]))
(;W[or];B[pr])
(;W[pr];B[qr])))
(;W[nr];B[ps])
(;W[os];B[ps]
(;W[nr];B[pr])
(;W[qs];B[qr]
(;W[pr];B[ns]
(;W[nr];B[or];W[ms];B[rs])
(;W[or];B[nr]))
(;W[rs];B[or];W[pr];B[ns]
(;W[nr];B[ps])
(;W[ps];B[ss])))
(;W[pr];B[qr]
(;W[qs];B[ns]
(;W[nr];B[or];W[ms];B[rs])
(;W[or];B[nr]))
(;W[or];B[nr]
(;W[qs];B[ns])
(;W[ns];B[ms]))))
(;W[pr];B[qr]
(;W[os];B[or])
(;W[ns];B[or])
(;W[ps];B[or])
(;W[or];B[nr])
(;W[nr];B[or]))
(;W[or];B[ps];W[pr])
(;W[qs];B[ps];W[pr];B[qr];W[os];B[ns]
(;W[nr];B[or];W[ms];B[rs])
(;W[or];B[nr]))
(;W[qr];B[qs]
(;W[pr];B[or])
(;W[ps];B[pr];W[os];B[ns]))
(;W[ns];B[ps]))
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