(;GM[1]FF[4]SZ[19]
GN[Variation]
PC[https://senseis.xmp.net/?GokyoShumyoSection7Problem20/Solution]AP[GoWiki:2009]
DT[2023-01-25]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection7Problem20/Solution

Variation]
PL[W]

AB[ij][ek][fk][gk][dl][hl][dm][im][cn][fn][eo][ho][jo][dq][eq][fq][iq][cr][dr][ir]
AW[cj][ej][dk][cl][gl][cm][gm][bn][gn][co][go][cp][gp][cq][gq][br][fr][hr]

;W[ep]C[W1]MN[1]
;B[fp]C[B2]MN[2]
;W[em]C[W3]MN[3]
;B[fm]C[B4]MN[4]
;W[fl]C[W5]MN[5]
;B[el]C[B6]MN[6]
;W[fo]C[W7]MN[7]

;
)
