Problem 9291 goproblems.com


Author	Andre Engels	Created	2006-10-17
Difficulty	1 kyu (history)	Source	N/A
AVG solve time	32 sec	Stars	3.83 (6 votes)
User attempts	587 / 2192	Collections	N/A
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2006-10-17
Source	N/A
Stars	3.83 (6 votes)
Collections	N/A
Your attempts	N/A

(;AB[rc]AB[qc]AB[pc]AB[ob]AW[rd]AW[qd]AW[pd]AW[oc]AW[nb]AW[nc]AW[ne]AW[rf]AW[mc]AB[od]AP[goproblems] (;B[oa];W[qa] (;B[ra];W[rb] (;B[sb];W[sa]C[Yes, a ko is the best you can do. Note that there are more answers possible for white, see problem 6463.RIGHT]) (;B[qb];W[sa] (;B[pa];W[sc];B[ra]C[Ko, white to find the first ko threat.RIGHT]) (;B[sc];W[sd] (;B[pa];W[na];B[ra]C[Ko, white has to find the first threat.RIGHT]) (;B[pb]C[Dead as it stands.])))) (;B[qb];W[ra] (;B[rb];W[na] (;B[pb];W[sc]) (;B[sc];W[pb])) (;B[pa];W[na];B[pb]C[White does not even need to answer that.]) (;B[sb];W[na];B[pb]C[Dead as it stands.]) (;B[sc];W[na];B[pb];W[rb] (;B[sa];W[sd]C[White's move is not even necessary.]) (;B[sb]C[dead in gote])) (;B[pb];W[sc])) (;B[pb];W[sc];B[sb];W[ra]) (;B[sc];W[ra] (;B[pb];W[rb]C[No Sir, black is dead.]) (;B[qb];W[na];B[pb];W[rb] (;B[sa];W[sd]C[White's move is not even necessary.]) (;B[sb]C[dead in gote])) (;B[rb];W[pb] (;B[sa];W[na]) (;B[qb];W[na])))) (;B[pa];W[sc] (;B[ra];W[sb] (;B[rb];W[qb]) (;B[qb];W[rb])) (;B[sb];W[ra] (;B[qa];W[na] (;B[rb];W[pb] (;B[qb];W[oa]) (;B[sa];W[oa])) (;B[oa];W[qb];B[pb];W[rb]) (;B[pb];W[rb]) (;B[qb];W[oa])) (;B[rb];W[na] (;B[qa];W[pb] (;B[qb];W[oa]) (;B[sa];W[oa])) (;B[oa];W[qa])) (;B[qb];W[na])) (;B[rb];W[sb]) (;B[qb];W[sb])) (;B[pb];W[oa] (;B[rb];W[qa];B[pa];W[sc];B[sb];W[ra]) (;B[qa];W[rb]) (;B[pa];W[sc];B[sb];W[ra]) (;B[sc];W[pa];B[qa];W[rb];B[na];W[oa]) (;B[ra];W[sb];B[sc];W[pa];B[qa];W[rb];B[na];W[oa]) (;B[sb];W[ra]C[The vital point (bulky 5)])) (;B[qa];W[oa] (;B[pb];W[rb]) (;B[rb];W[pb]) (;B[sc];W[pb]) (;B[sb];W[pb])) (;B[qb];W[ra] (;B[pa];W[na] (;B[oa];W[qa];B[pb]C[White does not even need to answer that.]) (;B[qa];W[oa]) (;B[sc];W[oa]) (;B[rb];W[oa])) (;B[qa];W[oa]) (;B[oa];W[qa] (;B[pb];W[sc]) (;B[sc];W[pb];B[pa];W[na];B[pb];W[rb]))) (;B[ra];W[sb] (;B[rb];W[sc]) (;B[sc];W[pb]) (;B[pa];W[sc] (;B[rb];W[qb]) (;B[qb];W[rb])) (;B[oa];W[sc]) (;B[pb];W[sc])) (;B[sc];W[pb];B[qb];W[oa]) (;B[sb];W[ra] (;B[qb];W[oa]) (;B[pb];W[qa]) (;B[pa];W[qb] (;B[qa];W[rb]C[This is not a seki - black's stones at the top will get into atari.]) (;B[rb];W[qa])) (;B[qa];W[oa]) (;B[oa];W[pb] (;B[qb];W[qa];B[pa];W[na]) (;B[qa];W[na]) (;B[pa];W[qa];B[qb];W[na]))))