(;GM[1]FF[4]SZ[19]
GN[Variation 1: B5 here also kills]
PC[https://senseis.xmp.net/?GokyoShumyoSection2Problem2/Solution]AP[GoWiki:2009]
DT[2023-01-04]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection2Problem2/Solution

Variation 1: B5 here also kills]
PL[B]

AB[ab][fb][bc][fc][bd][cd][dd][ed]
AW[bb][cb][eb][ac][cc][dc]
LB[ca:b][ea:a]

;B[ba]C[B5]MN[5]
;W[aa]C[W6]MN[6]
;B[da]C[B7]MN[7]

;LB[ca:b][ea:a]
)
