(;GM[1]FF[4]SZ[19]
GN[When Black wins the ko]
PC[https://senseis.xmp.net/?BeginnerExercise5/Solution]AP[GoWiki:2009]
DT[2024-08-21]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise5/Solution

When Black wins the ko]
PL[B]

AB[ra][mb][ob][sb][nc][pc][pd][qd][rd][sd]
AW[pa][pb][qb][rb][qc][rc][sc]

;B[sa]C[B1]MN[1]

;
)
