(;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[B]

AB[bc][nc][cd][qd][be]
AW[cc][dc][ic][ed]

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

;
)
