(;GM[1]FF[4]SZ[19]
GN[Failure 1]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem43/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem43/Solution

Failure 1]
PL[B]

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

;B[ka]C[B1]MN[1]
;W[oa]C[W2]MN[2]
;B[na]C[B3]MN[3]
;W[mb]C[W4]MN[4]

;
)
