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

Empty triangle]
PL[B]

AB[dd][ed][de]
CR[ee]


;CR[ee]
)
