(;GM[1]FF[4]SZ[19]
GN[Snapback]
PC[http://senseis.xmp.net/?BeginnerExercise148/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise148/Solution

Snapback]
PL[B]

AB[hp][ip][jp][eq][fq][gq][kq][lq][er][lr][nr][es][js][ms]
AW[hq][iq][jq][fr][gr][ir][kr][fs][hs][ls]
CR[ls]
LB[hr:a]

;B[is]C[B1]MN[1]
;W[jr]C[W2]MN[2]
;B[ks]C[B3]MN[3]

;CR[ls]
LB[hr:a]
)
