Problem 21188 goproblems.com


Author	Xenor	Created	2016-05-13
Difficulty	5 dan (history)	Source	Game on KGS (slightly modified).
AVG solve time	119 sec	Stars	1 (1 votes)
User attempts	69 / 319	Collections	Corner based
Genre	life and death ⓢ	Your attempts	N/A
Similar problems
Created	2016-05-13
Source	Game on KGS (slightly modified).
Stars	1 (1 votes)
Collections	Corner based
Your attempts	N/A

(;AB[rb]AB[rc]AB[qc]AB[pc]AB[pb]AB[nd]AB[od]AB[mb]AB[mc]AB[me]AW[pd]AW[qd]AW[rd]AW[sd]AW[sc]AW[oc]AW[ob]AW[qa]AW[qf]TR[qa]TR[ob]TR[oc]C[White tried to trick Black with R19. Black to capture the 3 marked stones !]AP[goproblems] (;B[ra] (;W[pa] (;B[nb];W[sb] (;B[nc];W[oa] (;B[na]C[Well done !RIGHT]) (;B[qb];W[sa]C[Ooops !!])) (;B[oa]C[Not necessary...];W[na] (;B[nc];W[oa] (;B[ma]C[Well done !RIGHT];W[sa];B[qb]C[RIGHT]) (;B[qb];W[sa]C[Ooops !!])) (;B[qb];W[sa]C[Ooops !!]) (;B[ma];W[sa]C[Ooops !!])) (;B[qb];W[sa]C[Ooops !!])) (;B[na];W[sb] (;B[qb];W[sa]C[Ooops !!]) (;B[oa];W[sa] (;B[qb];W[pa] (;B[qa];W[pa]C[Ooops !!]) (;B[nc];W[qa]C[Ooops !!]) (;B[nb];W[qa]C[Ooops !!])) (;B[nb];W[qb]C[Ooops !!]) (;B[nc];W[qb]C[Ooops !!])) (;B[nb];W[sa]C[Ooops !!]) (;B[nc];W[sa]C[Ooops !!])) (;B[oa]C[Not necessary...];W[na] (;B[sb];W[oa] (;B[qb];W[sa]C[Ooops !!]) (;B[ma];W[qb]C[Ooops !!]) (;B[nb];W[qb]C[Ooops !!]) (;B[nc];W[qb]C[Ooops !!])) (;B[ma];W[sb] (;B[nb];W[sa]C[Ooops !!]) (;B[nc];W[sa]C[Ooops !!]) (;B[qb];W[sa]C[Ooops !!]) (;B[sa];W[qb]C[Ooops !!])) (;B[qb];W[sb];B[oa];W[pa]C[Ooops !!]) (;B[nb];W[sb] (;B[nc];W[oa] (;B[ma]C[Well done !RIGHT]) (;B[qb];W[sa]C[Ooops !!])) (;B[qb];W[sa]C[Ooops !!]) (;B[ma])) (;B[nc];W[sb] (;B[nb];W[oa];B[ma]C[RIGHT];W[sa];B[qb]C[RIGHT]) (;B[ma];W[sa]C[Ooops !!]))) (;B[sb];W[oa] (;B[na];W[qb]C[Ooops !!]) (;B[nb];W[qb]C[Ooops !!]) (;B[nc]C[];W[qb]C[Ooops !!]) (;B[qb];W[sa]C[Ooops !!])) (;B[nc];W[oa] (;B[sb];W[qb]C[Ooops !!]) (;B[qb];W[sb]C[Ooops !!]) (;B[nb];W[sb] (;B[na]C[Well done !RIGHT]) (;B[qb];W[sa]C[Ooops !!])))) (;W[oa] (;B[pa];W[sb]C[Ooops !!]) (;B[nc];W[sb] (;B[nb];W[sa];B[na]C[Well done !RIGHT]) (;B[na];W[sa];B[nb]C[RIGHT]) (;B[pa];W[sa]C[Ooops !!])) (;B[nb];W[sb] (;B[pa];W[sa]C[Ooops !!]) (;B[nc];W[sa];B[na]C[Well done !RIGHT]) (;B[na];W[sa];B[nc]C[RIGHT])) (;B[na];W[sb] (;B[nb];W[sa];B[nc]C[RIGHT]) (;B[nc];W[sa];B[nb]C[RIGHT]) (;B[pa];W[sa]C[Ooops !!])) (;B[sb];W[pa] (;B[na];W[qb]C[Ooops !!]) (;B[nb];W[qb]C[Ooops !!]) (;B[nc]C[];W[qb]C[Ooops !!]) (;B[qb];W[sa]C[Ooops !!])))) (;B[sb];W[pa] (;B[ra];W[oa] (;B[na];W[qb]C[Ooops !!]) (;B[nb];W[qb]C[Ooops !!]) (;B[nc]C[];W[qb]C[Ooops !!]) (;B[qb];W[sa]C[Ooops !!])) (;B[oa];W[na];B[ra];W[oa] (;B[qb];W[sa]C[Ooops !!]) (;B[ma];W[qb]C[Ooops !!]) (;B[nb];W[qb]C[Ooops !!]) (;B[nc];W[qb]C[Ooops !!])) (;B[na];W[oa] (;B[ra];W[qb]C[Ooops !!]) (;B[nb];W[ra];B[nc]C[Seki !!]) (;B[nc];W[ra];B[nb])) (;B[nb];W[oa] (;B[ra];W[qb]C[Ooops !!]) (;B[na];W[ra];B[nc]C[Seki !!]) (;B[nc];W[ra];B[na]))) (;B[pa];W[sb] (;B[oa];W[ra]C[White saved some stones !!]) (;B[na];W[ra]C[White saved some stones !!]) (;B[nb];W[ra]C[White saved some stones !!]) (;B[nc];W[ra]C[White saved some stones !!]) (;B[ra];W[oa])) (;B[oa] (;W[pa] (;B[na];W[sb] (;B[ra];W[sa] (;B[qb];W[pa] (;B[qa];W[pa]C[Ooops !!]) (;B[nc];W[qa]C[Ooops !!]) (;B[nb];W[qa]C[Ooops !!])) (;B[nb];W[qb]C[Ooops !!]) (;B[nc];W[qb]C[Ooops !!])) (;B[qb];W[ra]C[Ooops !!]) (;B[sa];W[ra]C[Ooops !!]) (;B[nc];W[ra]C[White saved some stones !!]) (;B[nb];W[ra]C[White saved some stones !! (thx elentarwon for this variation)])) (;B[nb];W[na] (;B[nc];W[oa] (;B[sb];W[ra];B[ma]C[Seki !!]) (;B[ra];W[sb];B[ma]C[RIGHT];W[sa];B[qb]C[RIGHT]) (;B[ma];W[ra] (;B[sa];W[sb]C[Ooops !!]) (;B[sb]))) (;B[ma];W[sb] (;B[ra];W[sa]C[Ooops !!]) (;B[nc];W[ra]C[Ooops !!])) (;B[sb];W[ra] (;B[nc];W[oa];B[ma]C[Seki !!]) (;B[ma];W[oa];B[nc])) (;B[sa];W[ra]C[Ooops !!]) (;B[ra];W[sb];B[nc];W[oa];B[ma]C[RIGHT];W[sa];B[qb]C[RIGHT])) (;B[nc];W[na] (;B[sb];W[ra] (;B[nb];W[oa];B[ma]C[Seki !!]) (;B[ma];W[sa]C[Ooops !!])) (;B[ra];W[sb] (;B[nb]) (;B[ma])) (;B[sa];W[ra]C[Ooops !!])) (;B[sb];W[na];B[ra]) (;B[ra];W[na] (;B[nb];W[sb];B[nc];W[oa];B[ma]C[RIGHT];W[sa];B[qb]C[RIGHT]) (;B[nc];W[sb] (;B[nb]) (;B[ma])))) (;W[sb] (;B[ra];W[pa];B[nb];W[na] (;B[nc];W[oa] (;B[ma]C[Well done !RIGHT]) (;B[qb];W[sa]C[Ooops !!])) (;B[qb];W[sa]C[Ooops !!]) (;B[ma])) (;B[nb];W[ra]C[Ooops !!]) (;B[nc];W[ra]C[Ooops !!]) (;B[pa];W[ra]))) (;B[nb];W[ra] (;B[sb];W[pa] (;B[nc];W[oa];B[na]) (;B[na];W[oa];B[nc]C[Seki !!]) (;B[oa];W[na] (;B[nc];W[oa]) (;B[ma];W[oa];B[nc]))) (;B[oa];W[sb]) (;B[pa];W[sb]) (;B[nc];W[sb]C[Ooops !!])) (;B[nc];W[ra] (;B[oa];W[sb]C[]) (;B[nb];W[sb]C[Ooops !!]) (;B[pa];W[sb]) (;B[sb];W[pa] (;B[na];W[oa];B[nb]) (;B[nb];W[oa];B[na]) (;B[oa];W[na] (;B[nb];W[oa]) (;B[ma];W[sa]C[Ooops !!])))) (;B[na];W[pa];B[oa];W[sb] (;B[ra]) (;B[qb];W[ra]C[Ooops !!]) (;B[sa];W[ra]C[Ooops !!]) (;B[nc];W[ra]C[White saved some stones !!]) (;B[nb];W[ra]C[White saved some stones !! (thx elentarwon for this variation)])) (;B[sa];W[ra];B[sb];W[pa]C[Ooops !!]))