(;GM[1]FF[4]SZ[19]
GN[Failure]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem15/Solution]AP[GoWiki:2009]
DT[2023-01-24]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem15/Solution

Failure]
PL[W]

AB[kb][dc][ic][jc][dd][ee][fe][he][je][ff]
AW[ib][cc][gc][hc][cd][de][df][ef][ch]

;W[eb]C[W1]MN[1]
;B[db]C[B2]MN[2]
;W[ed]C[W3]MN[3]
;B[fc]C[B4]MN[4]

;
)
