Problem	9572
Created	2006-12-14
Source	Japanese booklet
Rating

Difficulty	7 dan
Average Solve Time	56 secs
User Attempts	275 / 1224
Solve Ratio Rating	2 kyu
	rating history

Comments welcome...

(;AW[rc]AW[rd]AW[pc]AW[pb]AW[na]AW[nb]AB[ma]AB[mb]AB[mc]AB[nd]AB[od]AB[pd]AB[qd]AB[re]AB[se]C[Black to kill]AP[goproblems] (;B[qc];W[qb] (;B[rb];W[sb];B[ra] (;W[sc] (;B[ob];W[oc];B[nc];W[oa];B[qa]C[CHOICERIGHT]) (;B[oc];W[ob];B[sd];W[qa];B[sa];W[rc]) (;B[nc];W[ob]) (;B[sd];W[qa];B[sa];W[rc]) (;B[pa];W[ob];B[qa];W[oa] (;B[sd];W[sa] (;B[qa]C[RIGHT]) (;B[ra]C[RIGHT])) (;B[nc];W[sa]))) (;W[qa] (;B[sd];W[sc];B[sa];W[rc]) (;B[sc]C[RIGHT]))) (;B[sd];W[rb]) (;B[sc];W[rb] (;B[sd];W[sb]) (;B[oc];W[ob])) (;B[oc];W[ob];B[rb];W[sb];B[ra];W[sc] (;B[sd];W[qa];B[sa];W[rc]) (;B[qa];W[pa]))) (;B[rb];W[qc] (;B[sd];W[sc] (;B[qa];W[pa]) (;B[pa];W[qa])) (;B[qa];W[pa])) (;B[sd];W[ra];B[sb] (;W[sc]) (;W[rb] (;B[sc];W[pa]) (;B[qc];W[qb] (;B[sc];W[oc]) (;B[oc];W[ob])))) (;B[qb];W[qc]) (;B[ob];W[oc];B[pa];W[qa]) (;B[sb];W[rb]) (;B[sc];W[rb];B[sb];W[ra];B[sd];W[oc]))