(;GM[1]FF[4]SZ[19]
GN[Failure.]
PC[http://senseis.xmp.net/?BeginnerExercise129/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise129/Solution

Failure.]
PL[B]

AB[oo][po][qo][ro][op][oq][or][pr][ps]
AW[pp][qp][rp][pq][rq][qr]
LB[rr:a]

;B[sp]C[B1]MN[1]
;W[sr]C[W2]MN[2]
;B[rs]C[B3]MN[3]
;W[qs]C[W4]MN[4]

;LB[rr:a]
)
