(;GM[1]FF[4]SZ[19]
GN[inferior move by Black]
PC[http://senseis.xmp.net/?BigP]AP[GoWiki:2009]
DT[2018-02-22]
C[Diagram from http://senseis.xmp.net/?BigP

inferior move by Black]
PL[W]

AB[ca][cb][bc][cc][bd][ae][be]
AW[da][db][dc][cd][ce][af][bf][df]

;W[ab]C[W1]MN[1]
;B[aa]C[B2]MN[2]

;
)
