(;GM[1]FF[4]SZ[19]
GN[Failure 4]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem14/Solution]AP[GoWiki:2009]
DT[2023-02-08]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem14/Solution

Failure 4]
PL[W]

AB[ra][qb][pc][sc][qd][rd]
AW[oa][ob][oc][od][pd][qe][re][se]

;W[sa]C[W1]MN[1]

;
)
