(;GM[1]FF[4]SZ[19]
GN[White's mistake]
PC[https://senseis.xmp.net/?L2GroupWithDescent]AP[GoWiki:2009]
DT[2023-02-19]
C[Diagram from https://senseis.xmp.net/?L2GroupWithDescent

White's mistake]
PL[B]

AB[ea][bb][eb][ac][dc][fc][dd][ce][de][bf][cg]
AW[ba][cb][db][cc][bd][cd][be]
CR[ea]
LB[ad:a]

;W[bc]C[W4]MN[4]
;B[ab]C[B5]MN[5]
;W[da]C[W6]MN[6]
;B[ae]C[B7]MN[7]

;CR[ea]
LB[ad:a]
)
