Problem 6706 goproblems.com


Author	kochi	Created	2005-06-15
Difficulty	5 dan (history)	Source	blackness2 vs kouchi
AVG solve time	48 sec	Stars	3.1 (10 votes)
User attempts	887 / 3510	Collections	Corner based
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2005-06-15
Source	blackness2 vs kouchi
Stars	3.1 (10 votes)
Collections	Corner based
Your attempts	N/A

(;AW[bp]AW[cq]AW[ap]AW[ao]AW[an]AW[bn]AW[cn]AB[am]AB[bm]AB[cm]AB[cl]AB[bk]AB[bj]AB[ci]AB[ch]AB[bg]AW[cj]AW[ck]AW[dk]AW[dl]AW[dm]AB[dn]AB[do]AB[co]AB[bo]AB[dp]AB[ep]AB[fp]AB[dq]AB[fq]AB[fr]AW[dr]AW[er]AW[eq]C[B kill the corner]AP[goproblems] (;B[es];W[br] (;B[ds];W[cs];B[cr];W[dr]) (;B[cs];W[bs]) (;B[bs];W[cs] (;B[fs];W[as]) (;B[ar];W[aq] (;B[cp];W[as]) (;B[fs];W[as]))) (;B[cp];W[ar];B[ds];W[cr])) (;B[cr];W[br] (;B[cp];W[cs] (;B[ar];W[bq] (;B[es];W[bs]) (;B[bs];W[es]) (;B[as];W[es])) (;B[bq];W[aq]) (;B[aq];W[bq];B[es];W[ds])) (;B[cs];W[bs] (;B[cp];W[bq]) (;B[es];W[ds]) (;B[bq];W[aq];B[cp];W[ds])) (;B[bq];W[aq] (;B[cp];W[cs]) (;B[cs];W[bs];B[cp];W[ds]) (;B[es];W[cs]))) (;B[ds];W[br] (;B[es];W[cs];B[cr];W[dr]) (;B[cs];W[es] (;B[bs];W[cr]) (;B[fs];W[cr])) (;B[bs];W[es] (;B[cr];W[cs]) (;B[ar];W[cs];B[cp];W[bq])) (;B[cp];W[cs])) (;B[cp];W[br]) (;B[bq];W[br];B[es];W[cs]) (;B[br];W[cr] (;B[es];W[bs] (;B[ds];W[ar]) (;B[cp];W[bq];B[ar];W[ds]) (;B[bq];W[cp] (;B[ds];W[ar]) (;B[ar];W[ds])) (;B[ar];W[ds] (;B[as];W[bq];B[cs]C[ko]) (;B[bq];W[cp]) (;B[cp];W[bq])) (;B[aq];W[bq] (;B[ds];W[ar]) (;B[ar];W[as] (;B[ar];W[ds]) (;B[ds];W[ar])))) (;B[bq];W[cp] (;B[bs]C[] (;W[cs]C[CHOICE] (;B[es]C[RIGHT]) (;B[aq];W[ar]) (;B[ar];W[es]) (;B[fs] (;W[es]C[CHOICE];B[aq]C[RIGHT]) (;W[aq]C[CHOICE] (;B[ar];W[as]) (;B[es]C[RIGHT])))) (;W[es]C[CHOICE] (;B[cs]C[];W[fs]C[complications...]) (;B[fs];W[aq] (;B[cs];W[ar]) (;B[ar]C[RIGHT])) (;B[aq];W[fs]C[complications...]) (;B[ar];W[cs]))) (;B[es];W[bs] (;B[ds];W[ar]) (;B[ar];W[ds]) (;B[cs];W[ds])) (;B[ar];W[bs] (;B[es];W[ds]) (;B[cs];W[ds])) (;B[as];W[cs] (;B[ar];W[es]) (;B[bs];W[es]) (;B[aq];W[bs]) (;B[es];W[bs] (;B[aq];W[ar]) (;B[ar];W[aq]))) (;B[aq];W[bs] (;B[es];W[ar]) (;B[ar];W[es])) (;B[cs];W[ds] (;B[aq];W[bs];B[as];W[ar]) (;B[ar];W[bs]) (;B[bs];W[ar] (;B[es];W[fs];B[gs];W[aq]) (;B[aq];W[as]) (;B[as];W[aq])) (;B[as];W[bs]C[ko]))) (;B[ds];W[bs] (;B[bq];W[cp] (;B[ar];W[es]) (;B[es];W[ar])) (;B[cp];W[bq];B[ar];W[es]) (;B[es];W[ar])) (;B[cs];W[ar] (;B[bq];W[bs];B[as]C[ko]) (;B[bs];W[bq]) (;B[es];W[bq];B[bs];W[ds]) (;B[ds];W[es] (;B[bs];W[bq]) (;B[bq];W[bs])) (;B[as];W[bs]C[ko])) (;B[bs];W[ar] (;B[bq];W[cp] (;B[aq];W[cs]) (;B[as];W[cs]) (;B[es];W[ds] (;B[aq];W[fs]C[RIGHT]) (;B[as];W[fs]C[now b has to a3or else die, and w will get a chance to run out. this still may work but w can do this much cleaner.]) (;B[cs];W[fs];B[gs];W[aq]) (;B[fs];W[aq]C[oops])) (;B[cs];W[ds] (;B[aq];W[as]) (;B[fs];W[aq])) (;B[ds];W[es] (;B[cs];W[aq]) (;B[aq];W[cs]) (;B[fs];W[cs]))) (;B[es];W[bq]) (;B[cs];W[bq]) (;B[cp];W[bq]) (;B[ds];W[bq]) (;B[as];W[bq];B[aq];W[cs]) (;B[aq];W[bq])) (;B[cp];W[bq] (;B[es];W[bs] (;B[ar];W[ds]) (;B[ds];W[ar])) (;B[ar];W[bs] (;B[es];W[ds]) (;B[ds];W[es]) (;B[cs];W[ds])) (;B[as];W[ar] (;B[cs];W[bs]) (;B[bs];W[cs]) (;B[aq];W[cs] (;B[es];W[ar]C[ko]) (;B[ar];W[bs] (;B[es];W[ar]) (;B[ar];W[es]))) (;B[es];W[bs])) (;B[bs];W[ar])) (;B[ar];W[bs] (;B[as];W[es] (;B[cs];W[bq]) (;B[bq];W[aq]) (;B[cp];W[bq];B[cs]) (;B[aq]) (;B[fs];W[cs])) (;B[cs];W[bq] (;B[as];W[es]) (;B[es];W[ds])) (;B[es];W[ds] (;B[as];W[bq];B[cs]C[ko]) (;B[bq];W[cp]) (;B[cp];W[bq])) (;B[bq];W[cp];B[es];W[ds]) (;B[cp];W[bq];B[es];W[ds])) (;B[as];W[bq] (;B[cs];W[ds] (;B[ar];W[aq]) (;B[bs];W[ar])) (;B[aq];W[ar]C[ko]) (;B[es];W[ar];B[aq]C[ko]) (;B[bs];W[cs]) (;B[ar];W[es];B[cs]C[seki])) (;B[aq];W[bs] (;B[ar];W[es]) (;B[es];W[bq] (;B[ds];W[ar]) (;B[ar];W[ds])) (;B[cp];W[bq]))))