(;GM[1]FF[4]SZ[19]
GN[Failure.]
PC[http://senseis.xmp.net/?BeginnerExercise22/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise22/Solution

Failure.]
PL[B]

AB[bp][cp][dp][ep][eq][er][es]
AW[cq][dq][br][dr][cs]

;B[ds]C[B1]MN[1]
;W[bq]C[W2]MN[2]

;
)
