Problem 4803 goproblems.com


Author	sigh	Created	2004-07-09
Difficulty	6 dan (history)	Source	N/A
AVG solve time	43 sec	Stars	3.88 (8 votes)
User attempts	859 / 3926	Collections	Corner based
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2004-07-09
Source	N/A
Stars	3.88 (8 votes)
Collections	Corner based
Your attempts	N/A

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[19]KM[0.00] PW[White]PB[Black]AW[bp][cq][ar][cr][dr][ds]AB[cl][bm][cn][co][cp][dq][eq][er][gr][bs][cs]C[Black to play and kill]PL[B] (;B[br]CR[br] ;W[as]CR[as] (;B[ap]CR[ap] ;W[bo]CR[bo] (;B[ao]CR[ao] ;W[an]CR[an] (;B[bn]CR[bn] ;W[aq]CR[aq] (;B[ao]CR[ao] ;W[bq]CR[bq] ;B[bs]CR[bs]C[RIGHT]) (;B[am]CR[am] ;W[ao]CR[ao]C[WRONG]) (;B[es]CR[es] ;W[bq]CR[bq]LB[ao:B][bs:A]C[WRONG A and B are miai for life])) (;B[es]CR[es] ;W[bq]CR[bq] (;B[bs]CR[bs] ;W[bn]CR[bn]C[WRONG]) (;B[bn]CR[bn] ;W[aq]CR[aq]LB[ao:B][bs:A]C[WRONG A and B are miai for life])) (;B[am]CR[am] ;W[aq]CR[aq]LB[bn:B][ao:A]C[WRONG A and B are miai for the second eye]) (;B[aq]CR[aq] ;W[bq]CR[bq] (;B[ar]CR[ar] ;W[as]CR[as]C[WRONG]) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar]C[WRONG]) (;B[bn]CR[bn] ;W[ar]CR[ar] (;B[ao]CR[ao] ;W[ap]CR[ap]C[WRONG]) (;B[ap]CR[ap] ;W[ao]CR[ao]C[WRONG])) (;B[am]CR[am] ;W[ar]CR[ar]C[WRONG]))) (;B[bn]CR[bn] ;W[ao]CR[ao] (;B[an]CR[an] ;W[bq]CR[bq]C[WRONG]) (;B[es]CR[es] ;W[bq]CR[bq]C[WRONG]) (;B[bq]CR[bq] ;W[aq]CR[aq]C[WRONG]) (;B[aq]CR[aq] ;W[bq]CR[bq] (;B[ar]CR[ar] ;W[as]CR[as]C[WRONG]) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar]C[WRONG]) (;B[an]CR[an] ;W[ar]CR[ar]C[WRONG]))) (;B[aq]CR[aq] ;W[bq]CR[bq] (;B[ar]CR[ar] ;W[ao]CR[ao]C[WRONG]) (;B[ao]CR[ao] ;W[an]CR[an] (;B[bn]CR[bn] ;W[ar]CR[ar] (;B[ao]CR[ao] ;W[ap]CR[ap]C[WRONG]) (;B[ap]CR[ap] ;W[ao]CR[ao]C[WRONG])) (;B[ar]CR[ar] ;W[as]CR[as]C[WRONG]) (;B[am]CR[am] ;W[ar]CR[ar]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar]C[WRONG])) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar] (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[ao]CR[ao] ;W[an]CR[an]C[WRONG])) (;B[bn]CR[bn] ;W[ao]CR[ao] (;B[es]CR[es] ;W[ar]CR[ar]C[WRONG]) (;B[an]CR[an] ;W[ar]CR[ar]C[WRONG])))) (;B[es]CR[es] ;W[bq]CR[bq]LB[ap:A][bs:B]C[WRONG A and B are miai for life]) (;B[bo]CR[bo] ;W[bq]CR[bq]LB[ap:A][bs:B]C[WRONG A and B are miai for life]) (;B[aq]CR[aq] ;W[bq]CR[bq] (;B[as]CR[as] ;W[ar]CR[ar]LB[ap:B][bs:A]C[WRONG]) (;B[ar]CR[ar] ;W[ap]CR[ap]C[WRONG]) (;B[ap]CR[ap] ;W[bo]CR[bo] (;B[ar]CR[ar] ;W[ao]CR[ao]C[WRONG]) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[ao]CR[ao] ;W[an]CR[an] (;B[bn]CR[bn] ;W[ar]CR[ar] (;B[ao]CR[ao] ;W[ap]CR[ap]C[WRONG]) (;B[ap]CR[ap] ;W[ao]CR[ao]C[WRONG]) (;B[am]CR[am] ;W[ao]CR[ao]C[WRONG])) (;B[ar]CR[ar] ;W[as]CR[as]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar]C[WRONG]) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]))) (;B[bo]CR[bo] ;W[ap]CR[ap] (;B[ar]CR[ar] ;W[as]CR[as]C[WRONG]) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[ao]CR[ao] ;W[ar]CR[ar] ;B[es]CR[es] ;W[as]CR[as]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar] ;B[ao]CR[ao] ;W[as]CR[as]C[WRONG]))) (;B[ao]CR[ao] ;W[ap]CR[ap] (;B[bo]CR[bo] ;W[bq]CR[bq]C[WRONG]) (;B[aq]CR[aq] ;W[bq]CR[bq] (;B[ar]CR[ar] ;W[as]CR[as]C[WRONG]) (;B[as]CR[as] ;W[ar]CR[ar]C[WRONG]) (;B[bo]CR[bo] ;W[ar]CR[ar] ;B[es]CR[es] ;W[as]CR[as]C[WRONG]) (;B[es]CR[es] ;W[ar]CR[ar] ;B[bo]CR[bo] ;W[as]CR[as]C[WRONG]))) (;B[bq]CR[bq] ;W[aq]CR[aq]C[WRONG])) (;B[es]CR[es] ;W[ap]CR[ap]LB[bq:A][br:B]C[WRONG A and B are miai for life]) (;B[bq]CR[bq] ;W[aq]CR[aq] (;B[br]CR[br] ;W[as]CR[as]C[WRONG]) (;B[bo]CR[bo] ;W[ap]CR[ap] (;B[br]CR[br] ;W[as]CR[as]C[WRONG]) (;B[es]CR[es] ;W[br]CR[br]C[WRONG]) (;B[ao]CR[ao]C[WRONG White does not have to answer. If black e2 then white lives with b2. If black b2 white captures to make a living shape.])) (;B[es]CR[es] ;W[br]CR[br]C[WRONG]) (;B[ap]CR[ap] ;W[ao]CR[ao] (;B[br]CR[br] ;W[as]CR[as]C[WRONG]) (;B[es]CR[es] ;W[br]CR[br]C[WRONG]) (;B[bo]CR[bo] ;W[br]CR[br]C[WRONG]))) (;B[ao]CR[ao] ;W[ap]CR[ap]LB[bq:A][br:B]C[WRONG A and B are miai for life]) (;B[as]CR[as] ;W[br]CR[br]LB[ap:A][bs:B]C[WRONG A and B are miai for life]) (;B[bo]CR[bo] ;W[ap]CR[ap]LB[bq:A][br:B]C[WRONG A and B are miai for life]) (;B[aq]CR[aq] ;W[bq]CR[bq] (;B[ap]CR[ap] ;W[ao]CR[ao]LB[bo:A][ap:B]C[WRONG A and B are miai for the second eye]) (;B[ao]CR[ao] ;W[ap]CR[ap]C[WRONG]) (;B[br]CR[br] ;W[as]CR[as]C[WRONG]) (;B[bo]CR[bo] ;W[ap]CR[ap]C[WRONG])) (;B[ap]CR[ap] ;W[bo]CR[bo] (;B[es]CR[es] ;W[br]CR[br] (;B[ao]CR[ao] ;W[an]CR[an] (;B[bn]CR[bn] ;W[aq]CR[aq]C[WRONG]) (;B[am]CR[am] ;W[aq]CR[aq]C[WRONG]) (;B[aq]CR[aq] ;W[bn]CR[bn]C[WRONG])) (;B[an]CR[an] ;W[ao]CR[ao]C[WRONG])) (;B[bq]CR[bq] ;W[aq]CR[aq] (;B[ao]CR[ao] ;W[an]CR[an]C[WRONG]) (;B[an]CR[an] ;W[ao]CR[ao]C[WRONG]) (;B[es]CR[es] ;W[br]CR[br]C[WRONG])) (;B[aq]CR[aq] ;W[ao]CR[ao]C[WRONG]) (;B[an]CR[an] ;W[ao]CR[ao] ;B[bq]CR[bq] ;W[aq]CR[aq]C[WRONG]) (;B[bn]CR[bn] ;W[ao]CR[ao] ;B[bq]CR[bq] ;W[aq]CR[aq]C[WRONG]) (;B[ao]CR[ao] ;W[an]CR[an] (;B[bn]CR[bn] ;W[aq]CR[aq]LB[ao:A][br:B]C[WRONG A and B are miai for life]) (;B[am]CR[am] ;W[aq]CR[aq]C[WRONG]) (;B[br]CR[br] ;W[aq]CR[aq]LB[bn:B][ao:A]C[WRONG A and B are miai for life]) (;B[bq]CR[bq] ;W[aq]CR[aq]C[WRONG]) (;B[aq]CR[aq] ;W[bq]CR[bq]C[WRONG]) (;B[es]CR[es] ;W[aq]CR[aq]C[WRONG])) (;B[br]CR[br] ;W[aq]CR[aq] (;B[ao]CR[ao] ;W[an]CR[an]LB[bn:A][ao:B]C[WRONG A and B are miai for life]) (;B[es]CR[es] ;W[bq]CR[bq] ;B[ao]CR[ao] ;W[an]CR[an]LB[bn:A][ao:B]C[WRONG A and B are miai for life]) (;B[an]CR[an] ;W[ao]CR[ao]C[WRONG]) (;B[as]CR[as] ;W[ao]CR[ao] ;B[es]CR[es] ;W[bq]CR[bq]C[WRONG]))))