(;GM[1]FF[4]SZ[19]
GN[Original version]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem68/Solution]AP[GoWiki:2009]
DT[2023-02-01]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem68/Solution

Original version]
PL[W]

AB[fd][gd][ee][he][bf][df][if][bg][dg][hg][bh][hh][bi][ci][di][ei][fi][gi][hj][gk]
AW[gb][dc][ec][hc][id][be][ce][de][fe][ge][ke][af][ef][ff][gf][hf][cg][fg][gg][jg][kg][ah][ch][dh][eh][gh][ai][ii][bj][cj][dj][ej][fj][gj]

;W[hi]C[W1]MN[1]
;B[fh]C[B2]MN[2]
;W[cf]C[W3]MN[3]
;B[eg]C[B4]MN[4]

;
)
