(;GM[1]FF[4]SZ[19]
GN[White to kill]
PC[https://senseis.xmp.net/?RTGProblem91/Solution]AP[GoWiki:2009]
DT[2022-12-13]
C[Diagram from https://senseis.xmp.net/?RTGProblem91/Solution

White to kill]
PL[W]

AB[aa][ea][ab][bb][db][eb][gb][cc][dc][fc][gc]
AW[hb][jb][ac][bc][ec][hc][bd][cd][dd][ed][hd][fe][ge]
LB[ga:b][cb:a]

;W[ca]C[W1]MN[1]

;LB[ga:b][cb:a]
)
