Problem	6346
Created	2005-04-16
Source
Rating

Difficulty	7 dan
Average Solve Time	50 secs
User Attempts	925 / 3195
Solve Ratio Rating	4 kyu
	rating history

(;AB[aq]AB[bq]AB[cq]AB[dq]AB[dr]AB[fr]AB[fq]AW[ar]AW[br]AW[cr]AW[ds]AW[gs]AW[gr]AW[gp]AW[fp]AW[ep]AW[dp]AW[cp]AW[bo]AW[ao]AW[bp]AB[hq]MA[hq]C[Prevent black from saving any stones.]AB[jq]AB[jr]AW[io]AB[kp]AP[goproblems];W[gq] (;B[es]C[CHOICE] (;W[cs];B[bs]) (;W[bs];B[cs]C[White needs lots of ko threats this way.]) (;W[fs];B[eq] (;W[er]C[ko]) (;W[bs];B[cs]C[ko]) (;W[cs];B[bs]C[ko])) (;W[eq] (;B[cs]C[CHOICE] (;W[bs];B[as]MA[br]MA[er]) (;W[er]C[RIGHT])) (;B[er]C[CHOICE] (;W[bs];B[cs]C[ko]) (;W[cs];B[bs]) (;W[ap];B[cs] (;W[bs];B[as]) (;W[fs]C[RIGHT])) (;W[fs];B[cs] (;W[bs];B[as]) (;W[ap]C[RIGHT]))))) (;B[cs]C[CHOICE] (;W[bs];B[es]C[ko]) (;W[es];B[fs] (;W[eq];B[er]) (;W[er];B[eq]) (;W[bs];B[er] (;W[cs];B[as]) (;W[ap];B[cs] (;W[eq];B[as]) (;W[ds]C[RIGHT])) (;W[eq];B[cs] (;W[ds]C[RIGHT]) (;W[ap];B[as]))) (;W[ap];B[er])) (;W[eq];B[er] (;W[es];B[fs]) (;W[fs];B[es] (;W[bs];B[as]) (;W[ap]C[RIGHT])) (;W[bs];B[es]C[ko]) (;W[ap];B[bs] (;W[es];B[fs]) (;W[fs];B[as]MA[br]MA[es]) (;W[as];B[cs];W[bs];B[cs]))) (;W[er];B[eq];W[bs];B[es]C[ko]) (;W[fs];B[es] (;W[bs];B[as]) (;W[ap];B[eq]) (;W[eq];B[er] (;W[bs];B[as]) (;W[ap]C[RIGHT])))))