(;GM[1]FF[4]SZ[19]
GN[Sufficient, but inferior]
PC[http://senseis.xmp.net/?BeginnerExercise23/Solution]AP[GoWiki:2009]
DT[2011-04-09]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise23/Solution

Sufficient, but inferior]
PL[W]

AB[in][jn][kn][go][ho][io][lo][mo][gq][hq][lq][mq][gr][mr][gs][js][ms]
AW[jo][ip][kp][iq][jq][kq][hr][ir][jr][lr][hs][ls]
CR[lr]

;W[is]C[W1]MN[1]
;B[ks]C[B2]MN[2]
;W[ko]C[W3]MN[3]
;B[kr]C[B4]MN[4]

;CR[lr]
)
