(;GM[1]FF[4]SZ[19]
GN[Beware of the belly]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem33/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem33/Solution

Beware of the belly]
PL[W]

AB[pa][pb][rb][oc][rc][nd][od][pd][qd][of][pf]
AW[nb][ob][qb][lc][nc][qc][md][rd][ne][qe][re][qf][ng][pg][qh]

;W[sb]C[W1]MN[1]
;B[sc]C[B2]MN[2]
;W[ra]C[W3]MN[3]

;
)
