(;GM[1]FF[4]SZ[9]
GN[Value of invasion]
PC[http://senseis.xmp.net/?Yoyoma/Projects]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?Yoyoma/Projects

Value of invasion]
PL[W]

AB[ga][ha][gb][ib][gc][hc][ic][bg][cg][ah][ch][bi]
AW[fa][fb][fc][gd][hd][id][af][bf][cf][dg][dh]

;W[di]C[W1]MN[1]
;B[ci]C[B2]MN[2]
;W[ag]C[W3]MN[3]

;
)
