(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[https://senseis.xmp.net/?GokyoShumyoSection3Problem90/Solution]AP[GoWiki:2009]
DT[2022-09-29]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection3Problem90/Solution

Solution]
PL[B]

AB[jb][ec][hc][ic][kc][bd][cd][dd][ed][ge][he]
AW[eb][gb][hb][ib][cc][dc][gc][gd]
LB[ea:a]

;B[cb]C[B1]MN[1]
;W[fa]C[W2]MN[2]
;B[fc]C[B3]MN[3]
;W[bb]C[W4]MN[4]
;B[db]C[B5]MN[5]
;W[bc]C[W6]MN[6]
;B[fb]C[B7]MN[7]
;W[da]C[W8]MN[8]

;LB[ea:a]
)
