Problem 13819 goproblems.com


Author	maba	Created	2010-07-02
Difficulty	7 dan (history)	Source	N/A
AVG solve time	75 sec	Stars	4.5 (2 votes)
User attempts	45 / 235	Collections	N/A
Genre	life and death ⓢ	Your attempts	N/A
Similar problems
Created	2010-07-02
Source	N/A
Stars	4.5 (2 votes)
Collections	N/A
Your attempts	N/A

(;AB[bp]AB[cp]AB[dp]AB[dq]AB[eq]AB[er]AW[fs]AW[fr]AW[fq]AW[fp]AW[ep]AW[do]AW[co]AW[bo]C[White to kill.]AW[bn]AB[cn]AP[goproblems] (;W[cr] (;B[br] (;W[bs] (;B[cq] (;W[es] (;B[dr];W[cs];B[ds];W[ap];B[as];W[aq]C[RIGHT]) (;B[cs];W[ds]C[RIGHT]) (;B[ds] (;W[ar];B[aq]C[ko]) (;W[cs];B[dr]) (;W[ap]))) (;W[ar];B[aq]C[ko]) (;W[cs];B[es] (;W[ar];B[bq] (;W[ap];B[aq]) (;W[aq];B[ap])) (;W[ap];B[aq]) (;W[aq];B[ap] (;W[ar];B[bq]) (;W[bq];B[ar]))) (;W[ds];B[es] (;W[ar];B[aq]C[ko]) (;W[ap];B[aq] (;W[ao];B[ar]) (;W[ar];B[as]C[ko]) (;W[cs];B[ar])) (;W[aq];B[ap] (;W[ar];B[bq]) (;W[bq];B[ar]))) (;W[dr];B[ds] (;W[ar];B[aq]C[ko]) (;W[ap];B[ar]) (;W[aq];B[ap]) (;W[cs];B[as]) (;W[es];B[cs])) (;W[ap];B[aq] (;W[ar];B[as]C[ko]) (;W[ds];B[es] (;W[ao];B[ar]) (;W[ar];B[as]C[ko]) (;W[cs];B[ar])) (;W[es];B[ds] (;W[cs];B[as]C[ko]) (;W[dr];B[cs]) (;W[ar];B[as]C[ko]))) (;W[aq];B[ap] (;W[es];B[ds] (;W[dr];B[cs]) (;W[cs];B[dr] (;W[ao];B[as]) (;W[ar];B[as]) (;W[bq];B[ar])) (;W[ar];B[bq] (;W[ao];B[as]) (;W[dr];B[cs]) (;W[cs];B[as] (;W[ar];B[dr]) (;W[dr];B[ds])))) (;W[ds];B[es] (;W[ar];B[bq]) (;W[bq];B[ar])) (;W[cs];B[es] (;W[ar];B[bq]) (;W[bq];B[ar])) (;W[ar];B[bq] (;W[es];B[ds] (;W[cs];B[as] (;W[ar];B[dr]) (;W[dr];B[ds])) (;W[ao];B[as])) (;W[ds];B[es]) (;W[cs];B[es]) (;W[dr];B[ds])))) (;B[dr];W[bq] (;B[ar];W[aq] (;B[ap];W[as]C[RIGHT]) (;B[cq];W[as] (;B[br];W[ar] (;B[ap];W[ao]C[RIGHT]) (;B[cs];W[ap]C[RIGHT]) (;B[ds];W[ap]C[RIGHT])) (;B[cs];W[ds]C[RIGHT]) (;B[ds];W[ap]C[RIGHT]) (;B[ap];W[ao] (;B[cs];W[ds]C[RIGHT]) (;B[br];W[ar]C[RIGHT]) (;B[ar];W[br]C[RIGHT])))) (;B[aq];W[ar]C[RIGHT]) (;B[cq];W[ar]C[RIGHT])) (;B[bq];W[es] (;B[dr];W[ds]C[RIGHT]) (;B[ds];W[dr]C[RIGHT])) (;B[ar];W[es] (;B[dr];W[ds]C[RIGHT]) (;B[ds];W[dr]C[RIGHT])) (;B[ds];W[bq] (;B[ar];W[aq];B[ap];W[as]C[RIGHT]) (;B[aq];W[ar]C[RIGHT]) (;B[cq];W[ar]C[RIGHT]) (;B[ap];W[ar]C[RIGHT])) (;B[es];W[bq]C[RIGHT]) (;B[cs];W[es] (;B[dr];W[ds]C[RIGHT]) (;B[cq];W[ds]C[RIGHT])) (;B[aq];W[es] (;B[dr];W[ds]C[RIGHT]) (;B[ds];W[dr]C[RIGHT]))) (;W[es] (;B[ds] (;W[bs];B[cq] (;W[ar];B[aq]C[ko]) (;W[cs];B[dr];W[ap];B[as];W[aq]C[RIGHT]) (;W[ap])) (;W[cs];B[bs] (;W[ap];B[cq] (;W[aq]) (;W[ar]) (;W[dr])) (;W[cq];B[bq]) (;W[dr];B[cq] (;W[ap];B[ds]) (;W[ds];B[aq])) (;W[aq];B[cq] (;W[ap];B[ar]) (;W[ar];B[ap]) (;W[dr];B[ds])) (;W[bq];B[cq]) (;W[ar];B[cq] (;W[ap];B[aq]C[ko]) (;W[aq];B[ap]) (;W[dr];B[ds]))) (;W[dr];B[cq] (;W[cs];B[bs] (;W[ap];B[ds]) (;W[ds];B[aq])) (;W[ap];B[cs] (;W[aq];B[ar]) (;W[ar];B[aq]C[ko])) (;W[aq];B[cs] (;W[ar];B[ap]) (;W[ap];B[ar])) (;W[ar];B[aq] (;W[cs];B[bs]) (;W[bs];B[cs]))) (;W[ap] (;B[cq] (;W[aq];B[ar];W[bs]C[RIGHT]) (;W[ar];B[aq]C[ko]) (;W[cs];B[bs] (;W[aq];B[ar]) (;W[ar];B[aq]C[ko]) (;W[dr];B[ds])) (;W[bs])) (;B[aq];W[dr] (;B[cq];W[bq]C[RIGHT]) (;B[cs];W[bs]C[RIGHT]) (;B[bs];W[cs] (;B[cq];W[bq]C[RIGHT]) (;B[ao];W[cq]C[RIGHT])) (;B[ao];W[cs] (;B[cq];W[bs]C[RIGHT]) (;B[bs];W[cq]C[RIGHT]))) (;B[cs];W[ar]C[RIGHT]) (;B[bs];W[ar]C[RIGHT])) (;W[aq];B[ap] (;W[bq];B[cq]) (;W[dr];B[cq];W[cs];B[bs] (;W[ar];B[ds]) (;W[ds];B[ar])) (;W[cs];B[bs] (;W[cq];B[bq]) (;W[dr];B[cq] (;W[ar];B[ds]) (;W[ds];B[ar])) (;W[bq];B[cq]) (;W[ar];B[dr]) (;W[ao];B[dr])) (;W[ar];B[dr] (;W[bq];B[bs]) (;W[bs];B[bq])) (;W[bs];B[cq] (;W[dr];B[cs]) (;W[cs];B[dr] (;W[ao];B[as]) (;W[ar];B[as]) (;W[bq];B[ar])) (;W[ar];B[bq] (;W[ao];B[as]) (;W[dr];B[cs]) (;W[cs];B[as] (;W[ar];B[dr]) (;W[dr];B[ds])))) (;W[cq];B[bq])) (;W[ar];B[aq] (;W[bs];B[as]C[ko]) (;W[cs];B[bs] (;W[dr];B[cq]) (;W[cq];B[bq])) (;W[dr];B[cq] (;W[cs];B[bs]) (;W[bs];B[cs])) (;W[cq];B[cs]))) (;B[cq];W[ds]C[RIGHT])) (;W[cs];B[bs] (;W[es];B[ds] (;W[ap];B[cq]) (;W[cq];B[bq]) (;W[dr];B[cq] (;W[ap];B[ds]) (;W[ds];B[aq])) (;W[aq];B[cq] (;W[ap];B[ar]) (;W[ar];B[ap]) (;W[dr];B[ds])) (;W[bq];B[cq]) (;W[ar];B[cq] (;W[ap];B[aq]C[ko]) (;W[aq];B[ap]) (;W[dr];B[ds]))) (;W[ap];B[cq] (;W[aq];B[ar];W[es];B[ds]) (;W[ar];B[aq]C[ko])) (;W[ar];B[aq] (;W[es];B[cq]) (;W[cq];B[ds])) (;W[aq];B[ap];W[es];B[cq] (;W[ds];B[ar]) (;W[ar];B[ds]))) (;W[ds];B[es] (;W[bs];B[bq]) (;W[ap];B[aq]) (;W[ar];B[aq]) (;W[aq];B[ap] (;W[bq];B[cq]) (;W[ar];B[bq]) (;W[bs];B[ar]))) (;W[dr];B[es]) (;W[ap] (;B[cq];W[aq];B[ar];W[ds] (;B[dr];W[cs]C[RIGHT]) (;B[es];W[bs]C[RIGHT])) (;B[bs];W[ar]C[RIGHT]) (;B[ar];W[es]C[RIGHT]) (;B[ds];W[ar]C[RIGHT]) (;B[aq] (;W[ds];B[es]) (;W[cs];B[es]) (;W[bs];B[ds]) (;W[dr];B[es]) (;W[es] (;B[dr];W[ds]C[RIGHT]) (;B[cs];W[ds]C[RIGHT]) (;B[cq]C[CHOICE] (;W[ao];B[cs]) (;W[ds]C[RIGHT]) (;W[cs];B[bs] (;W[dr];B[ds]) (;W[ds];B[ao]) (;W[ao];B[ds])) (;W[dr];B[ao] (;W[bs];B[as]C[ko]) (;W[cs];B[bs]) (;W[ds];B[bs])) (;W[bs];B[ds] (;W[cs];B[as]C[ko]) (;W[dr];B[cs]) (;W[ar];B[as]C[ko]))) (;B[ds];W[dr] (;B[cq];W[bq]C[RIGHT]) (;B[cs];W[bs]C[RIGHT]) (;B[bs];W[cs] (;B[cq];W[bq]C[RIGHT]) (;B[ao];W[cq]C[RIGHT])) (;B[ao];W[cs] (;B[cq];W[bs]C[RIGHT]) (;B[bs];W[cq]C[RIGHT])))))) (;W[bq];B[cq] (;W[ap];B[aq] (;W[es];B[cs]) (;W[ds];B[es]) (;W[bs];B[ds];W[ar];B[as])) (;W[es];B[cs]) (;W[cs];B[bs]) (;W[aq];B[ar] (;W[es];B[cs]) (;W[cs];B[ds]) (;W[ds];B[es]) (;W[ap];B[ao])) (;W[bs];B[aq] (;W[es];B[ds]) (;W[ar];B[as]) (;W[cs];B[ds]))) (;W[aq];B[ap];W[es];B[ds] (;W[bq];B[cq]) (;W[dr];B[cq];W[cs];B[bs] (;W[ar];B[ds]) (;W[ds];B[ar])) (;W[cs];B[bs] (;W[cq];B[bq]) (;W[dr];B[cq] (;W[ar];B[ds]) (;W[ds];B[ar])) (;W[bq];B[cq]) (;W[ar];B[dr]) (;W[ao];B[dr])) (;W[ar];B[dr] (;W[bq];B[bs]) (;W[bs];B[bq])) (;W[bs];B[cq]) (;W[cq];B[bq]))) (;B[dr];W[ar];B[br];W[bq];B[bs];W[cs] (;B[cq];W[as];B[br];W[bs];B[ap];W[es]C[RIGHT]) (;B[ap];W[as]C[RIGHT])) (;B[ds];W[ar];B[aq];W[br]C[RIGHT]) (;B[aq];W[es] (;B[br];W[ds] (;B[cq];W[bs]C[RIGHT]) (;B[bs];W[cq]C[RIGHT])) (;B[ds];W[dr];B[br];W[cs] (;B[bs];W[cq]C[RIGHT]) (;B[cq];W[bs]C[RIGHT]))) (;B[es];W[ar]C[RIGHT])) (;W[es];B[cr] (;W[cs];B[bs] (;W[br];B[ds]) (;W[ds];B[br]) (;W[ap];B[bq]) (;W[bq];B[ap] (;W[ds];B[br]) (;W[br];B[ds]))) (;W[br];B[bs] (;W[ds];B[ar]) (;W[ar];B[bq]) (;W[aq];B[bq]) (;W[bq];B[ap]) (;W[ap];B[bq])) (;W[ds];B[bq]) (;W[bq];B[ap] (;W[cs];B[bs] (;W[ds];B[br]) (;W[br];B[ds])) (;W[ds];B[br]) (;W[br];B[bs])) (;W[ap];B[bq])) (;W[bq];B[br] (;W[es];B[cq]) (;W[ap];B[cq] (;W[ar];B[aq]C[ko]) (;W[aq];B[ar])) (;W[aq];B[ap]) (;W[cr];B[cq] (;W[ap];B[aq] (;W[es];B[cs]) (;W[ds];B[es]) (;W[bs];B[ds];W[ar];B[as])) (;W[es];B[cs]) (;W[cs];B[bs]) (;W[aq];B[ar] (;W[es];B[cs]) (;W[cs];B[ds]) (;W[ds];B[es]) (;W[ap];B[ao])) (;W[bs];B[aq] (;W[es];B[ds]) (;W[ar];B[as]) (;W[cs];B[ds])))) (;W[aq];B[ap] (;W[es];B[cr]) (;W[cr];B[br];W[es];B[ds]) (;W[br];B[cr]) (;W[ds];B[cr]) (;W[cs];B[cr])) (;W[br];B[cr] (;W[bq];B[ap] (;W[es];B[ds] (;W[bs];B[aq];W[ar];B[cs]) (;W[ar];B[cq])) (;W[ds];B[es] (;W[bs];B[cs]) (;W[cs];B[aq] (;W[ar];B[bs]) (;W[bs];B[ar]) (;W[cq];B[dr]))) (;W[bs];B[es] (;W[cs];B[aq] (;W[ar];B[ds]) (;W[cq];B[ar] (;W[dr];B[ds]C[ko]) (;W[ds];B[dr]) (;W[ao];B[dr]))) (;W[aq];B[cs]) (;W[cq];B[cs] (;W[dr];B[ds] (;W[ao];B[aq]) (;W[aq];B[ar])) (;W[aq];B[ar]))) (;W[ar];B[es];W[cs];B[ds]) (;W[cs];B[ds] (;W[bs];B[es] (;W[cq];B[aq]C[ko]) (;W[aq];B[ar])) (;W[es];B[bs]))) (;W[ap];B[aq]) (;W[es];B[bq];W[cs];B[ds]C[ko]) (;W[ds];B[bq] (;W[cs];B[ar] (;W[bs];B[es]) (;W[es];B[bs])) (;W[es];B[cs] (;W[bs];B[ar]) (;W[dr];B[ar]) (;W[ap];B[ar]) (;W[aq];B[ap])) (;W[ap];B[aq] (;W[cs];B[ar]) (;W[es];B[cs])) (;W[aq];B[ap] (;W[cs];B[ar]) (;W[es];B[cs])))) (;W[ar];B[cr] (;W[ap];B[bq]) (;W[es];B[bq]) (;W[bq];B[ap]) (;W[br];B[bq])) (;W[ap];B[ar] (;W[cr];B[es] (;W[br];B[aq];W[ao];B[bq];W[bs];B[dr]) (;W[aq];B[bq]) (;W[bs];B[bq])) (;W[br];B[aq] (;W[es];B[cr] (;W[cs];B[bs];W[as];B[bq]) (;W[bq];B[ao];W[cs];B[ds]C[ko])) (;W[cr];B[es];W[ao];B[bq];W[bs];B[dr])) (;W[aq];B[bq]) (;W[es];B[cr] (;W[aq];B[bq]) (;W[bq];B[br]) (;W[bs];B[br]) (;W[cs];B[bs]) (;W[br];B[bq]) (;W[ds];B[bs])) (;W[bq];B[aq] (;W[ao];B[br] (;W[es];B[cr]) (;W[cr];B[cq] (;W[es];B[ds]) (;W[ds];B[es]) (;W[cs];B[es])) (;W[ds];B[es])) (;W[es];B[cr] (;W[cs];B[bs]) (;W[br];B[ao];W[cs];B[ds]C[ko])) (;W[br];B[ao]) (;W[cr];B[es];W[ao];B[br])) (;W[bs];B[cr] (;W[bq];B[br]) (;W[ds];B[es]) (;W[es];B[cs])) (;W[ds];B[cr]) (;W[cs];B[cr])))