Problem | 15262 |
Created | 2011-09-04 |
Source | Chinese book (modified) |
Rating | |
Difficulty | 6 dan |
Average Solve Time | 58 secs |
User Attempts |
74 / 412 |
Solve Ratio Rating | 1 dan |
| rating history |
(;AB[sr]AB[rq]AB[qq]AB[qr]AB[pq]AB[oq]AB[nq]AB[mr]AB[ms]AB[mo]AW[qs]AW[rs]AW[rr]AW[sq]AW[sp]AW[rp]AW[qp]AW[pp]AW[op]AW[np]AW[lq]AW[lr]AW[ls]AW[kp]C[White to kill.]AP[goproblems]
(;W[ps]
(;B[os]
(;W[mq];B[pr]
(;W[nr];B[ss]
(;W[qs];B[ps]
(;W[rs];B[ns];W[rr]C[Very well done! *o/*CHOICERIGHT])
(;W[rr];B[rs]C[oops :/])
(;W[ns];B[rs]C[oops :]))
(;W[rs];B[ns]
(;W[qs];B[rr])
(;W[rr];B[qs])
(;W[ps];B[qs]))
(;W[rr];B[rs]C[alive])
(;W[ns];B[rs]C[alive]))
(;W[ss];B[sr]
(;W[rs];B[nr])
(;W[qs];B[rs])
(;W[nr];B[ns];W[rs];B[qs]))
(;W[ns];B[nr])
(;W[or];B[nr]))
(;W[ss];B[mq]
(;W[mp];B[pr]
(;W[sr];B[nr])
(;W[nr];B[sr]))
(;W[ns];B[mp]C[Black sneaks out. :/])
(;W[nr];B[mp]C[Black sneaks out. :/])
(;W[or];B[mp]C[Black sneaks out. :/])
(;W[pr];B[mp]C[Black sneaks out. :/]))
(;W[nr];B[mq]
(;W[mp];B[pr]
(;W[ss];B[sr])
(;W[or];B[ss]
(;W[qs];B[ps];W[rs];B[rr])
(;W[rs];B[rr])))
(;W[ss];B[mp]C[Black escapes. :/])
(;W[or];B[mp]C[Black escapes. :/])
(;W[pr];B[mp]C[Black escapes. :/]))
(;W[ns];B[nr]
(;W[pr];B[or]
(;W[ss];B[sr])
(;W[mq];B[ss];W[qs];B[ps]))
(;W[ss];B[pr])
(;W[or];B[pr])
(;W[mq];B[pr]))
(;W[or];B[nr]
(;W[ns];B[mp]C[Ko is not the best solution.])
(;W[pr];B[ss]C[oh oh oh oh ouch])
(;W[ss];B[pr])
(;W[mq];B[pr]))
(;W[pr];B[or]
(;W[ss];B[sr])
(;W[mq];B[ss];W[qs];B[ps])))
(;B[mq]
(;W[mp];B[os]
(;W[ns];B[nr]
(;W[pr]C[Very well done! *o/*CHOICERIGHT])
(;W[or];B[pr]C[oops])
(;W[ss];B[pr]C[alive]))
(;W[nr];B[pr]
(;W[ss];B[sr])
(;W[or];B[ss]
(;W[qs];B[ps];W[rs];B[rr])
(;W[rs];B[rr])))
(;W[or];B[nr]C[Direct ko is good, but there is better.])
(;W[pr];B[or]
(;W[ss];B[sr])
(;W[nr];B[ss];W[qs];B[ps])
(;W[ns];B[ss];W[qs];B[ps]))
(;W[ss];B[pr]
(;W[sr];B[nr]C[alive])
(;W[nr];B[sr])))
(;W[nr];B[mp]C[Black escaped. :/])
(;W[ns];B[mp]C[Black escaped. :/])
(;W[or];B[mp]C[Black escaped. :/])
(;W[os];B[mp]C[Black escaped. :/])
(;W[pr];B[mp]C[Black escaped. :/])
(;W[ss];B[mp]C[Black escapes. :/])))
(;W[os];B[ps]
(;W[pr];B[or]
(;W[mq];B[ps]C[Ko. You played good shape, but there is a better sequence without ko.])
(;W[ps];B[ns]
(;W[ss];B[sr]C[No, there are no tesujis here. :)])
(;W[mq];B[ss]
(;W[ps];B[qs])
(;W[qs];B[ps])
(;W[rs];B[rr])))
(;W[ss];B[ns]
(;W[sr];B[ps])
(;W[ps];B[sr]))
(;W[ns];B[ps]C[Ko. You played good shape but there is a better sequence without ko.])
(;W[nr];B[ns]
(;W[mq];B[ps])
(;W[ps];B[ss])))
(;W[or];B[ss]
(;W[rs];B[rr];W[pr];B[qs];W[mq];B[nr])
(;W[mq];B[nr]
(;W[qs];B[rs])
(;W[rs];B[rr])))
(;W[nr];B[ss]
(;W[mq];B[or])
(;W[rs];B[or]))
(;W[mq];B[ss]
(;W[nr];B[or])
(;W[rs];B[or])
(;W[or];B[nr]
(;W[qs];B[rs])
(;W[rs];B[rr])))
(;W[ss];B[sr];W[rs];B[or]))
(;W[ss];B[ps]
(;W[sr];B[or])
(;W[or];B[sr];W[rs];B[qs])
(;W[mq];B[or])
(;W[os];B[sr];W[rs];B[or])
(;W[pr];B[sr]))
(;W[pr];B[os]
(;W[ps];B[or]
(;W[ss];B[sr])
(;W[mq];B[ss];W[qs];B[ps]))
(;W[or];B[nr]
(;W[ps];B[ss])
(;W[ss];B[ps]))
(;W[nr];B[or];W[mq];B[ns]
(;W[ps];B[ss])
(;W[ss];B[ps]))
(;W[mq];B[or])
(;W[ss];B[ps])
(;W[ns];B[or]))
(;W[or];B[ps]
(;W[os];B[ss]
(;W[rs];B[rr];W[pr];B[qs];W[mq];B[nr])
(;W[mq];B[nr]
(;W[qs];B[rs])
(;W[rs];B[rr])))
(;W[ss];B[sr];W[rs];B[qs])
(;W[mq];B[nr];W[os];B[ss]
(;W[qs];B[rs])
(;W[rs];B[rr])))
(;W[nr];B[mq]
(;W[mp];B[ps]
(;W[or];B[ss])
(;W[ss];B[sr]))
(;W[ps];B[mp]C[Black escapes. :/])
(;W[os];B[mp]C[Black escapes. :/]))
(;W[mq];B[ps]
(;W[ss];B[sr]
(;W[nr];B[or])
(;W[rs];B[or]))
(;W[nr];B[or];W[ns];B[ss])
(;W[or];B[nr];W[os];B[ss])
(;W[os];B[ss]
(;W[nr];B[or])
(;W[rs];B[or])
(;W[or];B[nr]))
(;W[pr];B[or])
(;W[ns];B[nr]
(;W[os];B[ss])
(;W[or];B[ss];W[rs];B[rr])))
(;W[ns];B[mq]
(;W[mp];B[ps]
(;W[or];B[ss])
(;W[ss];B[sr]))
(;W[ps];B[mp]C[Black escapes. :/])))
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