(;GM[1]FF[4]SZ[19]
GN[Wrong answer 1: big ko threat]
PC[https://senseis.xmp.net/?BeginnerExercise156/Solution]AP[GoWiki:2009]
DT[2022-10-23]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise156/Solution

Wrong answer 1: big ko threat]
PL[B]

AB[pb][sb][nc][pc][sc][qd][rd][sd]
AW[qa][qb][qc][rc][pd][pe][qe][re][rg]

;B[rb]C[B1]MN[1]
;W[se]C[W2]MN[2]
;W[ra]C[W4]MN[4]

;
)
