Problem	850
Created	2001-07-05
Source
Rating

Difficulty	6 dan
Average Solve Time	49 secs
User Attempts	194 / 2507
Solve Ratio Rating	4 dan
	rating history

(;SZ[19]AB[pb]AB[pc]AB[qc]AB[oa]AB[oc]AB[ld]AB[le]AB[me]AB[ne]AB[oe]AB[od]AB[pe]AB[lf]AB[pf]AW[nb]AW[ob]AW[nc]AW[nd]AW[md]AW[lc]AW[lb]AW[ma]AW[pd]AW[qd]AW[rd]AW[qf]AW[rf]AW[qh]AW[ph]AW[oh]AW[nh]AW[mh]AW[lh]AW[kg]AW[kf]AW[kd]AW[jc]C[Black first to live.]FF[4]GM[1]AP[Jago:Version 4.16]GN[goproblem850] (;B[sb] (;W[qa] (;B[ng];W[og] (;B[mg];W[pa] (;B[ra];W[rb] (;B[rc];W[sa] (;B[sc]TR[rb]TR[sa]C[ The two marked stones can't connect back.RIGHT]) (;B[qb];W[sc];B[ra];W[qa])) (;B[qb];W[rc])) (;B[rb];W[ra]) (;B[rc];W[ra]) (;B[qb];W[ra])) (;B[pa];W[rb];B[rc];W[mg];B[ra];W[sa]C[Ko.]) (;B[ra];W[rb];B[rc];W[sa]C[Ko.]) (;B[rb];W[pa] (;B[mg];W[ra]) (;B[ra];W[mg])) (;B[rc];W[ra] (;B[pa];W[mg]) (;B[mg];W[pa])) (;B[qb];W[ra] (;B[pa];W[mg]) (;B[mg];W[pa])) (;B[nf];W[mg]) (;B[of];W[mg])) (;B[pa];W[rb];B[rc];W[ng];B[ra];W[sa]C[Ko.]) (;B[ra];W[rb];B[rc];W[sa]C[Ko.]) (;B[rb];W[pa] (;B[ng];W[ra]) (;B[ra];W[ng])) (;B[rc];W[ra] (;B[pa];W[ng]) (;B[ng];W[pa])) (;B[qb];W[ra] (;B[pa];W[ng]) (;B[ng];W[pa])) (;B[nf];W[ng]) (;B[mg];W[ng]) (;B[og];W[ng])) (;W[ra];B[ng];W[og];B[mg]C[RIGHT]) (;W[rc];B[rb];W[qa];B[pa];W[ra];B[ng];W[og];B[mg]C[RIGHT]) (;W[rb];B[rc];W[ra];B[ng];W[og];B[mg]C[RIGHT])) (;B[rc];W[ng] (;B[sb];W[ra]) (;B[ra];W[sb] (;B[sc];W[pa] (;B[qa];W[rb]) (;B[rb];W[qa])) (;B[rb];W[sc])) (;B[rb];W[sc] (;B[sb];W[qa] (;B[pa];W[ra]) (;B[ra];W[pa])) (;B[qa];W[sb]) (;B[ra];W[sb]) (;B[pa];W[sb])) (;B[sc];W[pa] (;B[qa];W[rb]) (;B[ra];W[sb] (;B[rb];W[qa]) (;B[qa];W[rb])) (;B[rb];W[qa]) (;B[sb];W[ra] (;B[qa];W[rb]) (;B[rb];W[qa]))) (;B[pa];W[sc];B[sb];W[ra]) (;B[qa];W[rb])) (;B[ra];W[sb] (;B[rb];W[ng]) (;B[ng];W[rb]) (;B[rc];W[sc] (;B[rb];W[ng]) (;B[ng];W[rb]))) (;B[rb];W[qa] (;B[pa];W[ng] (;B[rc];W[sc] (;B[sb];W[ra]) (;B[ra];W[sb])) (;B[ra];W[sb]) (;B[sb];W[ra]) (;B[sc];W[rc] (;B[ra];W[sb]) (;B[sb];W[ra]))) (;B[ng];W[pa] (;B[ra];W[sb]) (;B[rc];W[ra]) (;B[sb];W[ra]) (;B[qb];W[sb])) (;B[ra];W[ng] (;B[pa];W[sb]) (;B[rc];W[pa]) (;B[sb];W[pa]) (;B[sc];W[pa])) (;B[rc];W[ng] (;B[pa];W[sc] (;B[sb];W[ra]) (;B[ra];W[sb])) (;B[ra];W[pa]) (;B[sc];W[pa])) (;B[sb];W[ng] (;B[ra];W[pa]) (;B[pa];W[ra]))) (;B[sc];W[rb] (;B[rc];W[ng] (;B[pa];W[ra]) (;B[ra];W[sb] (;B[pa];W[qb]) (;B[qb];W[pa])) (;B[sb];W[ra])) (;B[ng];W[rc])) (;B[ng];W[rb]) (;B[qa];W[rb]) (;B[pa];W[rb]))