(;GM[1]FF[4]SZ[19]
GN[Example 1, Difference Game (ii)]
PC[http://senseis.xmp.net/?DifferenceGame]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?DifferenceGame

Example 1, Difference Game (ii)]
PL[W]

AB[ea][ka][ma][eb][kb][mb][ec][kc][mc][ed][kd][ee][ke][me][ef][kf][lf][mf]
AW[fa][ha][na][fb][hb][nb][fc][hc][nc][fd][hd][nd][he][ne][ff][gf][hf][nf]

;W[md]C[W1]MN[1]
;B[ld]C[B2]MN[2]
;W[fe]C[W3]MN[3]

;
)
