(;GM[1]FF[4]SZ[19]
GN[White wins]
PC[https://senseis.xmp.net/?GokyoShumyoSection4Problem86/Solution]AP[GoWiki:2009]
DT[2022-12-31]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection4Problem86/Solution

White wins]
PL[W]

AB[gb][hb][ib][dc][gc][ed][fd]
AW[fb][cc][fc][hc][ic][jc][lc][bd][cd][gd][fe]

;W[ea]C[W1]MN[1]
;B[db]C[B2]MN[2]
;W[cb]C[W3]MN[3]
;B[da]C[B4]MN[4]
;W[dd]C[W5]MN[5]
;B[ec]C[B6]MN[6]
;W[ee]C[W7]MN[7]

;
)
