(;GM[1]FF[4]SZ[19]
GN[Variation 2: Black failure]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem174/Solution]AP[GoWiki:2009]
DT[2023-02-08]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem174/Solution

Variation 2: Black failure]
PL[W]

AB[ja][eb][kb][ec][gc][hc][ic][jc]
AW[bb][db][lb][nb][dc][kc][lc][dd][ed][fd][jd][ge][ie][hf]

;W[ga]C[W1]MN[1]
;B[ha]C[B2]MN[2]
;W[ib]C[W3]MN[3]
;B[gb]C[B4]MN[4]
;W[fc]C[W5]MN[5]
;B[fb]C[B6]MN[6]
;W[jb]C[W7]MN[7]

;
)
