(;GM[1]FF[4]SZ[19]
GN[Best for both sides]
PC[https://senseis.xmp.net/?GokyoShumyoSection2Problem39/Solution]AP[GoWiki:2009]
DT[2023-01-07]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection2Problem39/Solution

Best for both sides]
PL[B]

AB[ca][da][bb][jb][kb][cc][ec][ic][lc][cd][ed][kd][ce][ge][he][jf]
AW[ia][cb][db][eb][ib][fc][gc][jc][hd]

;B[gb]C[B1]MN[1]
;W[bc]C[W2]MN[2]
;B[bd]C[B3]MN[3]
;W[ie]C[W4]MN[4]
;B[hb]C[B5]MN[5]
;W[id]C[W6]MN[6]
;B[hc]C[B7]MN[7]
;W[if]C[W8]MN[8]

;
)
