Problem 4719 goproblems.com

Add / View flags +3


Author	transcend	Created	2004-06-27
Difficulty	1 kyu (history)	Source	Inspired by the 2000+ here on goproblems.com.
AVG solve time	72 sec	Stars	4.4 (5 votes)
User attempts	545 / 3004	Collections	Under the Stones, Side based
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2004-06-27
Source	Inspired by the 2000+ here on goproblems.com.
Stars	4.4 (5 votes)
Collections	Under the Stones, Side based
Your attempts	N/A

(;AB[rq]AB[sp]AB[qr]AW[rp]AW[qq]AW[qp]AW[rn]AB[pr]AB[nr]AW[nq]AW[pp]AB[oo]AB[no]AB[lp]AB[ln]AB[mm]AB[mn]AB[om]AW[kr]AW[ir]AB[jq]AB[kq]AW[jr]AB[io]AW[lr]AW[ls]AB[rr]AW[sr]AB[rs]AW[sq]C[Let's say black played A as a ko threat, but white ignored it and filled the ko. Show how foolish white was.]LB[nr:A]AB[gp]AW[gr]AW[fs]AW[hs]AB[gq]AB[iq]AB[hp]AW[hq]AW[hr]AB[js]AW[sm]AB[qn]AB[so]AW[ro]AB[pm]AW[qm]AW[ql]AW[fr]AB[pn]AW[np]AP[goproblems] (;B[mr];W[mq]C[] (;B[oq];W[op]C[] (;B[ms]C[];W[os]C[] (;B[ps];W[or]C[] (;B[ns];W[or]C[];B[pq];W[os]C[];B[nr]C[White bows their head in shame.RIGHT]) (;B[pq];W[ns])) (;B[or];W[ps])) (;B[os];W[ms] (;B[ns];W[pq]) (;B[pq];W[ns])) (;B[pq];W[os] (;B[ns];W[ps]) (;B[ps];W[ns]MA[ms]C[Can't stop the connection.]) (;B[ms];W[ps]))) (;B[lq];W[oq];B[or];W[ms];B[ns];W[ps])) (;B[oq];W[op]C[] (;B[mr];W[mq]C[] (;B[ms]C[];W[os]C[] (;B[ps];W[or]C[] (;B[ns];W[or]C[];B[pq];W[os]C[];B[nr]C[And white runs away crying.RIGHT]) (;B[pq];W[ns])) (;B[or];W[ps])) (;B[os];W[ms] (;B[pq];W[ns]) (;B[ns];W[pq])) (;B[pq];W[os] (;B[ps];W[ns]MA[ms]C[Can't stop the connection.]) (;B[ms];W[ps]) (;B[ns];W[ps]))) (;B[ps] (;W[ns] (;B[mr];W[mq] (;B[or];W[ms]) (;B[ms];W[or]) (;B[os];W[ms])) (;B[mq];W[mr]) (;B[or];W[mr])) (;W[or];B[os];W[ms] (;B[mr];W[mq] (;B[ns];W[pq]) (;B[pq];W[ns])) (;B[mq];W[mr] (;B[ns];W[pq]) (;B[pq];W[ns])) (;B[ns];W[pq];B[mr];W[mq]) (;B[pq];W[ns] (;B[mr];W[mq]) (;B[mq];W[mr])))) (;B[or];W[ns]) (;B[mq];W[mr];B[ns];W[pq] (;B[ps];W[or]) (;B[or];W[ps]))) (;B[mq];W[mr]C[] (;B[oq];W[op] (;B[os];W[pq]) (;B[ns];W[pq] (;B[or];W[ps]) (;B[ps];W[or]))) (;B[or];W[op];B[ns];W[ps]) (;B[op];W[oq] (;B[pq];W[or]) (;B[or];W[pq];B[ns];W[ps]))) (;B[op];W[oq]C[] (;B[mr];W[mq];B[or];W[ms];B[ns];W[ps]) (;B[pq];W[mq] (;B[or];W[ns]) (;B[ps];W[or]) (;B[mr];W[lq];B[or];W[ms];B[ns];W[ps]) (;B[lq];W[mr];B[or];W[ns])) (;B[or];W[mr] (;B[pq];W[mq];B[ns];W[ps]) (;B[mq];W[pq];B[ns];W[ps]))) (;B[or];W[mr];B[ns];W[ps]) (;B[ns];W[oq] (;B[or];W[ps]) (;B[mr];W[mq];B[or];W[ps]) (;B[mq];W[mr];B[or];W[ps]) (;B[ps];W[or])) (;B[pq];W[oq];B[or];W[ns]) (;B[os];W[oq];B[mr];W[mq] (;B[ms];W[or]C[]) (;B[or];W[ms])) (;B[ps];W[ns] (;B[mr];W[mq];B[or];W[ms]) (;B[oq];W[op];B[mr];W[mq]C[] (;B[or];W[ms]) (;B[ms];W[or]) (;B[os];W[ms]))) (;B[ss]C[NOTTHIS]) (;B[ms];W[mr] (;B[oq];W[op];B[os];W[pq]) (;B[op];W[oq];B[or];W[ps])))