(;GM[1]FF[4]SZ[19]
GN[Variation]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem30/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem30/Solution

Variation]
PL[B]

AB[bi][cj][ck][bm][cm][bn]
AW[bh][ch][ci][dj][dk][dl][dm][cn][co][cq]

;B[aj]C[B1]MN[1]
;W[ah]C[W2]MN[2]
;B[al]C[B3]MN[3]
;W[bk]C[W4]MN[4]
;B[bl]C[B5]MN[5]
;W[bo]C[W6]MN[6]
;B[an]C[B7]MN[7]

;
)
