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

Checking extension]
PL[W]

AB[pc][qf]
AW[dc][jc][de]

;W[nc]C[W1]MN[1]

;
)
