Problem 3704 goproblems.com


Author	Bass	Created	2004-01-07
Difficulty	4 dan (history)	Source	N/A
AVG solve time	56 sec	Stars	4.25 (4 votes)
User attempts	313 / 2151	Collections	Basic Shape, 1st Line Tesuji
Genre	life and death	Your attempts	N/A
Similar problems
Created	2004-01-07
Source	N/A
Stars	4.25 (4 votes)
Collections	Basic Shape, 1st Line Tesuji
Your attempts	N/A

(;AB[cr]AB[dr]AB[eq]AB[fq]AB[gr]AB[hr]AW[dq]AW[gq]AW[hq]AW[ir]AW[jq]AW[cq]AW[br]AW[eo]AW[do]AW[fo]AW[go]LB[bo:A]C[Play at A if you think black is unconditionally dead.]AP[goproblems] (;B[bs] (;W[bq] (;B[fs];W[er] (;B[cs]C[];W[hs];B[es]C[Well done! (navigate solution for white's strongest resistance)RIGHT]) (;B[hs];W[ds]) (;B[fr];W[hs]) (;B[es];W[cs])) (;B[es];W[fr] (;B[fs];W[hs] (;B[gs];W[cs]) (;B[cs];W[gs]) (;B[er];W[cs])) (;B[cs];W[hs]) (;B[er];W[hs] (;B[fs];W[cs]) (;B[cs];W[gs])) (;B[gs];W[cs])) (;B[er];W[fs]) (;B[fr];W[es]) (;B[cs];W[hs] (;B[fs];W[es];B[er];W[is]) (;B[es];W[fr]) (;B[gs];W[fr]) (;B[fr];W[es]) (;B[er];W[gs])) (;B[hs];W[fs] (;B[es];W[fr] (;B[cs];W[is]) (;B[er];W[cs])) (;B[cs];W[es]) (;B[fr];W[es]))) (;W[aq]C[This is white's strongest resistance.];B[fs];W[er];B[cs];W[es];B[hs];W[as];B[ar]C[white can make a ko, but she must also risk much.])) (;B[fs];W[er] (;B[es];W[cs]) (;B[hs];W[cs]) (;B[cs];W[bs]) (;B[bs];W[ds]) (;B[fr];W[cs]) (;B[bq];W[cs])) (;B[es];W[fr] (;B[fs];W[hs] (;B[bs];W[bq] (;B[cs];W[gs]) (;B[gs];W[cs]) (;B[er];W[cs])) (;B[cs];W[gs]) (;B[er];W[cs]) (;B[gs];W[cs])) (;B[hs];W[is]) (;B[cs];W[hs]) (;B[bs];W[bq] (;B[fs];W[hs] (;B[er];W[cs]) (;B[cs];W[gs]) (;B[gs];W[cs])) (;B[cs];W[hs]) (;B[er];W[hs] (;B[cs];W[gs]) (;B[fs];W[cs])) (;B[gs];W[cs])) (;B[bq];W[bp] (;B[bs];W[aq];B[cs];W[hs]) (;B[gs];W[cs]) (;B[fs];W[hs];B[bs];W[aq] (;B[gs];W[cs]) (;B[er];W[cs]) (;B[cs];W[gs])) (;B[cs];W[hs]) (;B[er];W[hs] (;B[fs];W[cs]) (;B[cs];W[gs])))) (;B[fr];W[es]) (;B[bq];W[bp];B[bs];W[aq] (;B[fs];W[er];B[cs];W[as]C[Easy ko for white]) (;B[es];W[fr] (;B[cs];W[gs]) (;B[fs];W[hs] (;B[gs];W[cs]) (;B[er];W[cs])) (;B[hs];W[is]) (;B[er];W[hs] (;B[cs];W[gs]) (;B[fs];W[cs])))) (;B[er];W[fs] (;B[bs];W[bq]) (;B[cs];W[es]) (;B[es];W[cs]) (;B[bq];W[bp];B[bs];W[aq] (;B[cs];W[es]) (;B[es];W[cs]))) (;B[cs];W[hs] (;B[fs];W[es];B[er];W[is]) (;B[es];W[fr]) (;B[fr];W[es]) (;B[er];W[fs])) (;B[ar];W[bq]C[this is a dead shape.]) (;B[hs];W[fs];B[es];W[fr] (;B[cs];W[is]) (;B[er];W[cs]) (;B[bs];W[bq];B[er];W[cs]) (;B[bq];W[bp] (;B[bs];W[aq];B[cs];W[is]) (;B[er];W[cs]))) (;B[bo]C[No, there still is some life in the black stones.]))