(;GM[1]FF[4]SZ[19]
GN[Basic failure]
PC[http://senseis.xmp.net/?BeginnerExercise62/Solution]AP[GoWiki:2009]
DT[2016-05-31]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise62/Solution

Basic failure]
PL[W]

AB[il][jl][kl][hm][lm][gn][ln][ho][mo][ip][mp][gq][hq][iq][jq][kq][mq][gr][mr]
AW[kn][lo][jp][kp][lp][lq][hr][ir][jr][kr][lr]
CR[jm]

;W[io]C[W1]MN[1]
;B[in]C[B2]MN[2]
;W[jo]C[W3]MN[3]
;B[jn]C[B4]MN[4]

;CR[jm]
)
