Problem	8672
Created	2006-06-08
Name	k47
Source	dashnet
Rating

Difficulty	8 dan
Average Solve Time	87 secs
User Attempts	129 / 968
Solve Ratio Rating	2 dan
	rating history

Ko is not a solution

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