(;GM[1]FF[4]SZ[19]
GN[Standard idea]
PC[http://senseis.xmp.net/?BQM290]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM290

Standard idea]
PL[W]

AB[fd][ch]
AW[cc][df]
CR[ch]
LB[ce:a]

;W[cg]C[W1]MN[1]
;B[dh]C[B2]MN[2]
;W[ff]C[W3]MN[3]

;CR[ch]
LB[ce:a]
)
