(;GM[1]FF[4]SZ[9]
GN[Black extends]
PC[http://senseis.xmp.net/?TedKeisersTeachingSystem]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?TedKeisersTeachingSystem

Black extends]
PL[B]

AB[bb][gb][cc][gc][dd][ee][ff][cg][gg][hh]
AW[db][hb][ec][fc][hc][fd][gd][ge][hf]

;B[fb]C[B1]MN[1]

;
)
