Problem 60 goproblems.com


Author	adum	Created	1999-08-18
Difficulty	4 dan (history)	Source	pamphlet
AVG solve time	30 sec	Stars	4.36 (11 votes)
User attempts	706 / 5412	Collections	N/A
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	1999-08-18
Source	pamphlet
Stars	4.36 (11 votes)
Collections	N/A
Your attempts	N/A

(;GM[1]FF[3] RU[Japanese]SZ[19]HA[0]KM[5.5] PW[White] PB[Black] GN[White (W) vs. Black (B)] DT[1999-07-28] SY[Cgoban 1.9.2]TM[30:00(5x1:00)]; AW[nb][mc][nc][oc][pd][rd][ne][pe][re][pf]AB[lb][mb][pb][sb][lc][pc][md][qd]C[black to live in the corner ] (;B[pa] ;W[na] (;B[ra] ;W[rc] (;B[rb]C[RIGHT ]) (;B[qb] ;W[rb])) (;B[rc] ;W[ra] (;B[qa] ;W[rb]) (;B[rb] ;W[qa])) (;B[rb] ;W[ra] (;B[qc] ;W[qa]) (;B[qa]CR[qa] ;W[qc]CR[qc]))) (;B[oa] ;W[na] (;B[ra] ;W[rc] ;B[rb] ;W[pa] (;B[qa] ;W[ob] (;B[pa] ;W[qc]) (;B[qc] ;W[pa])) (;B[ob] ;W[qb] (;B[qc] ;W[qe]) (;B[qa] ;W[qc]))) (;B[rb] ;W[ob] (;B[ra] ;W[pa] ;B[qa] ;W[oa] (;B[rc] ;W[qc]) (;B[qc] ;W[rc])) (;B[pa] ;W[ra] (;B[rc] ;W[qa]) (;B[qc] ;W[qa]))) (;B[rc]CR[rc] ;W[ra]CR[ra] (;B[qa]CR[qa] ;W[ob]CR[ob] (;B[rb]CR[rb] ;W[qc]CR[qc]) (;B[qc]CR[qc] ;W[rb]CR[rb])) (;B[ob]CR[ob] ;W[qa]CR[qa]) (;B[qc]CR[qc] ;W[qa]CR[qa]))) (;B[ra] ;W[rc] (;B[pa] ;W[qb] (;B[qa] ;W[na]) (;B[na] ;W[qa]) (;B[qc] ;W[rb] (;B[qa] ;W[na]) (;B[na] ;W[qa])) (;B[rb] ;W[qc] ;B[na] ;W[qa])) (;B[rb] ;W[pa] (;B[oa] ;W[na] (;B[qa] ;W[qc]CR[qc]) (;B[ob] ;W[qb] (;B[qa] ;W[qc]) (;B[qc]CR[qc] ;W[qe]CR[qe]))) (;B[qa] ;W[oa]) (;B[ob]CR[ob] ;W[oa]CR[oa] ;B[qa]CR[qa] ;W[na]CR[na]))) (;B[ob]CR[ob] ;W[na]CR[na] (;B[ra]CR[ra] ;W[rc]CR[rc] (;B[rb]CR[rb] ;W[qb]CR[qb] (;B[qc]CR[qc] ;W[pa]CR[pa] (;B[qa]CR[qa] ;W[oa]CR[oa]) (;B[oa]CR[oa] ;W[qe]CR[qe])) (;B[qa]CR[qa] ;W[qc]CR[qc])) (;B[oa]CR[oa] ;W[rb]CR[rb]) (;B[qb]CR[qb] ;W[rb]CR[rb]) (;B[qc]CR[qc] ;W[rb]CR[rb]) (;B[pa]CR[pa] ;W[rb]CR[rb])) (;B[rc]CR[rc] ;W[qb]CR[qb] (;B[qa]CR[qa] ;W[ra]CR[ra] (;B[rb]CR[rb] ;W[pa]CR[pa]) (;B[pa]CR[pa] ;W[rb]CR[rb]) (;B[qc]CR[qc] ;W[pa]CR[pa])) (;B[oa]CR[oa] ;W[qc]CR[qc]) (;B[rb]CR[rb] ;W[qa]CR[qa] ;B[ra]CR[ra] ;W[pa]CR[pa])) (;B[oa]CR[oa] ;W[qb]CR[qb] (;B[qc]CR[qc] (;W[rb]CR[rb] ;B[rc]CR[rc] ;W[qa]CR[qa] ;B[ra]CR[ra]C[Only ko]) (;W[qa]CR[qa] (;B[ra]CR[ra] ;W[rb]CR[rb] ;B[rc]CR[rc] ;W[sa]CR[sa]C[ko]) (;B[rc]CR[rc] ;W[ra]CR[ra]) (;B[rb]CR[rb] ;W[ra]CR[ra]))) (;B[rc]CR[rc] ;W[qc]CR[qc]) (;B[qa]CR[qa] ;W[qc]CR[qc]) (;B[rb]CR[rb] ;W[qc]CR[qc])) (;B[rb]CR[rb] ;W[qc]CR[qc] (;B[qb]CR[qb] ;W[oa]CR[oa] (;B[pa]CR[pa] ;W[ra]CR[ra]) (;B[ra]CR[ra] ;W[pa]CR[pa])) (;B[rc]CR[rc] ;W[oa]CR[oa] ;B[pa]CR[pa] ;W[ra]CR[ra]) (;B[ra]CR[ra] ;W[qb]CR[qb]))) (;B[rc]CR[rc] ;W[ra]CR[ra] (;B[oa]CR[oa] ;W[na]CR[na] (;B[ob]CR[ob] ;W[qa]CR[qa]) (;B[qa]CR[qa] ;W[ob]CR[ob] (;B[rb]CR[rb] ;W[qc]CR[qc]) (;B[qc]CR[qc] ;W[rb]CR[rb]))) (;B[pa]CR[pa] ;W[na]CR[na] (;B[rb]CR[rb] ;W[qc]CR[qc]) (;B[qa]CR[qa] ;W[qc]CR[qc])) (;B[qa]CR[qa] ;W[oa]CR[oa] (;B[rb]CR[rb] ;W[qc]CR[qc]) (;B[qc]CR[qc] ;W[rb]CR[rb])) (;B[rb]CR[rb] ;W[qa]CR[qa])) (;B[na]CR[na] ;W[oa]CR[oa] (;B[pa]CR[pa] ;W[ob]CR[ob] (;B[ra]CR[ra] ;W[qb]CR[qb] (;B[qc]CR[qc] ;W[rc]CR[rc] ;B[rb]CR[rb]C[RIGHT]) (;B[rc]CR[rc] ;W[qc]CR[qc]) (;B[rb]CR[rb] ;W[qc]CR[qc])) (;B[rb]CR[rb] ;W[qc]CR[qc] (;B[qb]CR[qb] ;W[ra]CR[ra]) (;B[ra]CR[ra] ;W[qb]CR[qb])) (;B[rc]CR[rc] ;W[ra]CR[ra])) (;B[ob]CR[ob] ;W[ma]CR[ma] ;B[pa]CR[pa] ;W[rc]CR[rc]C[Black can get only a ko this way.]) (;B[qa]CR[qa] ;W[rc]CR[rc]) (;B[rc]CR[rc] ;W[ra]CR[ra]) (;B[rb]CR[rb] ;W[qc]CR[qc] (;B[pa]CR[pa] ;W[ma]CR[ma] ;B[qb]CR[qb] ;W[ra]CR[ra]) (;B[qb]CR[qb] ;W[ra]CR[ra]))) (;B[rb]CR[rb] ;W[na]CR[na] (;B[pa]CR[pa] ;W[qc]CR[qc] ;B[qb]CR[qb] ;W[ra]CR[ra]) (;B[qc]CR[qc] ;W[qa]CR[qa]) (;B[ra]CR[ra] ;W[rc]CR[rc])))