(;GM[1]FF[4]SZ[19]
GN[Difference game:  Black first]
PC[http://senseis.xmp.net/?PlayingInfinitesimals]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?PlayingInfinitesimals

Difference game:  Black first]
PL[B]

AB[bh][ch][dh][eh][mh][bi][ki][li][mi][pi][bj][cj][dj][ej][fj][gj][kj][bk][kk][lk][ok][bl][cl][dl][el][fl][gl][kl]
AW[fh][nh][oh][ph][qh][ci][ei][fi][gi][hi][qi][hj][lj][mj][nj][oj][pj][qj][dk][hk][qk][hl][ll][ml][nl][ol][pl][ql]

;B[mk]C[B1]MN[1]
;W[nk]C[W2]MN[2]
;B[ni]C[B3]MN[3]
;W[gk]C[W4]MN[4]
;B[fk]C[B5]MN[5]

;
)
