(;GM[1]FF[4]SZ[19]
GN[ko to connect]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem55/Solution]AP[GoWiki:2009]
DT[2023-01-23]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem55/Solution

ko to connect]
PL[B]

AB[ca][ia][db][ib][dc][hc][dd][gd][id][de][ge][gf]
AW[cb][gb][hb][bc][ec][gc][cd][be][ee][fe][cf][eg][gg]
LB[ef:a]

;B[ga]C[B1]MN[1]
;W[fc]C[W2]MN[2]
;B[ha]C[B3]MN[3]
;W[fa]C[W4]MN[4]
;B[fb]C[B5]MN[5]
;W[eb]C[W6]MN[6]
;B[ea]C[B7]MN[7]

;LB[ef:a]
)
