(;GM[1]FF[4]SZ[19]
GN[First idea]
PC[http://senseis.xmp.net/?IgoHatsuyoRonProblem90/Attempts]AP[GoWiki:2009]
DT[2018-10-25]
C[Diagram from http://senseis.xmp.net/?IgoHatsuyoRonProblem90/Attempts

First idea]
PL[W]

AB[qb][nc][rc][ld][nd][me][nf][ng][pg][qg][rg]
AW[pc][od][qd][ne][oe][qe][qf]
LB[pa:a]

;W[pb]C[W1]MN[1]
;B[sb]C[B2]MN[2]
;W[rd]C[W3]MN[3]
;B[ra]C[B4]MN[4]
;W[rf]C[W5]MN[5]
;B[se]C[B6]MN[6]
;W[sd]C[W7]MN[7]
;B[sf]C[B8]MN[8]
;W[nb]C[W9]MN[9]
;B[mb]C[B10]MN[10]

;LB[pa:a]
)
