(;GM[1]FF[4]SZ[19]
GN[corner]
PC[https://senseis.xmp.net/?GokyoShumyoSection2Problem4/Attempts]AP[GoWiki:2009]
DT[2023-01-06]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection2Problem4/Attempts

corner]
PL[W]

AB[db][dc][bd][cd]
AW[eb][ec][dd][ce][de][cg]
LB[ab:b][ae:a]

;W[ad]C[W1]MN[1]
;B[be]C[B2]MN[2]
;W[bb]C[W3]MN[3]
;B[cb]C[B4]MN[4]
;W[ba]C[W5]MN[5]
;B[ca]C[B6]MN[6]
;W[bc]C[W7]MN[7]
;B[cc]C[B8]MN[8]
;W[bf]C[W9]MN[9]

;LB[ab:b][ae:a]
)
