(;GM[1]FF[4]SZ[19]
GN[Black 51 discussion.]
PC[http://senseis.xmp.net/?BlackSheepRengo2003/B51Discussion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BlackSheepRengo2003/B51Discussion

Black 51 discussion.]
PL[B]

AB[da][eb][bc][cc][dc][oc][bd][ed][od][qd][pg][di][ji][ki][jj][il][dm][cn][en][bo][fo][bp][gp][hp][op][hq][pq][gr]
AW[fb][ec][fc][nc][cd][dd][nd][be][fe][je][ne][df][li][qi][kj][lj][kl][pl][dn][fn][co][go][qo][dp][ep][fp][eq][gq][fr]

;B[do]C[B1]MN[1]
;W[eo]C[W2]MN[2]
;B[cp]C[B3]MN[3]
;W[kp]C[W4]MN[4]

;
)
