(;GM[1]FF[4]SZ[19]
GN[White avoids ko]
PC[http://senseis.xmp.net/?PickyEndgameProblem/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?PickyEndgameProblem/Attempts

White avoids ko]
PL[B]

AB[bp][cp][dp][ep][cq][eq][br][er][es]
AW[ao][bo][co][do][ap][aq][bq][cr][bs]
LB[ds:a]

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

;LB[ds:a]
)
