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

Exercise 4]
PL[W]

AB[fb][gb][bc][ec][dd][ed][ce][de][fe][cf][ff][dg][fg]
AW[bb][eb][cc][dc][fc][cd][fd][be][ee][bf][ef][cg]


;
)
