(;GM[1]FF[4]SZ[9]
GN[W3 gives the button]
PC[http://senseis.xmp.net/?Pledger/SandBox]AP[GoWiki:2009]
DT[2009-11-16]
C[Diagram from http://senseis.xmp.net/?Pledger/SandBox

W3 gives the button]
PL[W]

AB[ga][cb][fb][gb][ec][gc][ed][fd][be][fe][ff][dg][eg][fg][dh][ei]
AW[ea][fa][db][eb][bc][dc][dd][de][bf][df][cg][ch][ci][di]
CR[cb][be]

;W[ef]C[W1]MN[1]
;B[ee]C[B2]MN[2]

;CR[cb][be]
)
