(;GM[1]FF[4]SZ[19]
GN[Failure: seki]
PC[http://senseis.xmp.net/?BeginnerExercise45/Solution]AP[GoWiki:2009]
DT[2009-05-19]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise45/Solution

Failure: seki]
PL[B]

AB[ao][bo][co][do][dp][bq][dq][eq][fq][br][fr][fs]
AW[ap][bp][cp][cq][cr][dr][er][es]
LB[ds:a]

;B[cs]C[B1]MN[1]
;W[bs]C[W2]MN[2]
;B[as]C[B3]MN[3]
;W[aq]C[W4]MN[4]

;LB[ds:a]
)
