(;GM[1]FF[4]SZ[19]
GN[Failure 4]
PC[https://senseis.xmp.net/?GokyoShumyoSection1Problem43/Solution]AP[GoWiki:2009]
DT[2023-01-18]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection1Problem43/Solution

Failure 4]
PL[B]

AB[kb][ob][lc][mc][nc]
AW[qb][ic][jc][kc][oc][pc][ld][md][nd]

;B[ma]C[B1]MN[1]
;W[nb]C[W2]MN[2]
;B[oa]C[B3]MN[3]
;W[ka]C[W4]MN[4]
;B[jb]C[B5]MN[5]
;W[ib]C[W6]MN[6]
;B[ja]C[B7]MN[7]
;W[lb]C[W8]MN[8]

;
)
