(;GM[1]FF[4]SZ[19]
GN[White's play]
PC[https://senseis.xmp.net/?EndgameProblem7/Solution]AP[GoWiki:2009]
DT[2023-06-20]
C[Diagram from https://senseis.xmp.net/?EndgameProblem7/Solution

White's play]
PL[W]

AB[cb][cc][bd][be][ce][de][ef][dg]
AW[bb][db][bc][ec][gc][cd][dd][ee][fe]
CR[aa][ba][ca][ab]
LB[dc:b][ad:a]

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

;CR[aa][ba][ca][ab]
LB[dc:b][ad:a]
)
