(;GM[1]FF[4]SZ[19]
GN[Variation]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem42/Solution]AP[GoWiki:2009]
DT[2023-01-25]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem42/Solution

Variation]
PL[B]

AB[ba][bb][fb][hb][bc][cc][gc][hc][cd][hd][ce][de]
AW[cb][db][gb][dc][bd][dd][gd][be][ee][ge][cf][ef][cg]

;B[ed]C[B1]MN[1]
;W[ec]C[W2]MN[2]
;B[da]C[B3]MN[3]
;W[ea]C[W4]MN[4]
;B[ca]C[B5]MN[5]
;W[fc]C[W6]MN[6]
;B[fa]C[B7]MN[7]

;
)
