(;GM[1]FF[4]SZ[19]
GN[A ko to win]
PC[http://senseis.xmp.net/?BeginnerExercise86/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise86/Solution

A ko to win]
PL[B]

AB[cn][bo][cp][dp][dq][fq][ar][er]
AW[bp][bq][cq][br][dr][cs]
SQ[dr][cs]
LB[ds:a]

;B[bs]C[B3]MN[3]

;SQ[dr][cs]
LB[ds:a]
)
