invalid problem set
| Problem | 5450 |
| Created | 2004-11-10 |
| Name | Go Seigen Tsumego No.20 |
| Source | Go Seigen |
| Rating | |
| Difficulty | 1.1 kyu |
| Average Solve Time | 46 secs |
| User Attempts |
1005 / 3370 |
| Solve Ratio Rating | 4 kyu |
| rating history |
Black to play.
(;AB[rb][rc][qd][pd][pf][nf][mf][le][ld][lc][lb][la][ma]
AW[na][oc][od][qb][qc][nb][mb][mc][md]SZ[19]
(;B[nd];W[ne];B[oe];W[me];B[pb];W[pc];B[qa];W[pa];B[oa]C[RIGHT])
(;B[pb];W[pc];B[qa];W[pa];B[oa];W[ob]C[Wrong.])
(;B[qa];W[pb]C[Wrong.]))
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