(;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[B]

AB[ga][ha][gb][ib][gc][hc][ic]
AW[fa][fb][fc][gd][hd][id][cf]

;B[bg]C[B1]MN[1]
;W[bf]C[W2]MN[2]
;B[cg]C[B3]MN[3]
;W[dg]C[W4]MN[4]
;B[ch]C[B5]MN[5]
;W[dh]C[W6]MN[6]
;B[bi]C[B7]MN[7]
;W[af]C[W8]MN[8]
;B[ah]C[B9]MN[9]

;
)
