(;GM[1]FF[4]SZ[19]
GN[Corner]
PC[http://senseis.xmp.net/?BQM415]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM415

Corner]
PL[W]

AB[cb][db][cc][cd][be][ce]
AW[eb][gb][dc][ec][dd][de][bf][cf][df][bh]

;W[ae]C[W1]MN[1]
;B[ad]C[B2]MN[2]
;W[af]C[W3]MN[3]
;B[ab]C[B4]MN[4]

;
)
