(;GM[1]FF[4]SZ[19]
GN[straight J group]
PC[https://senseis.xmp.net/?GokyoShumyoSection3Problem32/Solution]AP[GoWiki:2009]
DT[2023-01-21]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection3Problem32/Solution

straight J group]
PL[B]

AB[eb][cc][dc][hc][ed][fd][gd][hd][id][je][if]
AW[fb][hb][ec][fc][gc][ic][jc][lc][bd][dd][jd][be][de]
LB[ab:a]

;B[ea]C[B1]MN[1]
;W[gb]C[W2]MN[2]
;B[bc]C[B3]MN[3]

;LB[ab:a]
)
