(;GM[1]FF[4]SZ[19]
GN[White loses]
PC[https://senseis.xmp.net/?GokyoShumyoSection4Problem83/Solution]AP[GoWiki:2009]
DT[2022-12-31]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection4Problem83/Solution

White loses]
PL[B]

AB[ca][cb][gb][bc][cc][gc][dd][ed][cf][df]
AW[da][db][eb][fb][dc][bd][cd][bf][cg]

;B[ad]C[B1]MN[1]
;W[be]C[W2]MN[2]
;B[ba]C[B3]MN[3]
;W[ab]C[W4]MN[4]
;B[ec]C[B5]MN[5]
;W[ac]C[W6]MN[6]
;B[fc]C[B7]MN[7]

;
)
