(;GM[1]FF[4]SZ[19]
GN[Ko]
PC[https://senseis.xmp.net/?GokyoSeimyoVolume3Problem26/Solution]AP[GoWiki:2009]
DT[2023-02-15]
C[Diagram from https://senseis.xmp.net/?GokyoSeimyoVolume3Problem26/Solution

Ko]
PL[B]

AB[cb][db][bc][dc][fc][ed][ef][ch][eh][bi][ci]
AW[ba][bb][cc][cd][dd][cf][cg][ah][bh]

;B[af]C[B1]MN[1]
;W[bf]C[W2]MN[2]
;B[ab]C[B3]MN[3]
;W[bd]C[W4]MN[4]
;B[ad]C[B5]MN[5]

;
)
