(;GM[1]FF[4]SZ[19]
GN[Failure]
PC[http://senseis.xmp.net/?BeginnerExercise40/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise40/Solution

Failure]
PL[B]

AB[ob][pb][qb][mc][nc][md][rd][le][re][lf][pf][qf][rf][lg][mg][ng][og][pg]
AW[rb][oc][pc][qc][rc][nd][qd][oe][pe][qe][mf][nf][of]

;B[me]C[B1]MN[1]
;W[ra]C[W2]MN[2]
;B[od]C[B3]MN[3]
;W[ne]C[W4]MN[4]

;
)
