(;GM[1]FF[4]SZ[19]
GN[Meaning of Black 21]
PC[http://senseis.xmp.net/?Kuksu47Game4FusekiFirstInvasion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?Kuksu47Game4FusekiFirstInvasion

Meaning of Black 21]
PL[B]

AB[db][fc][kc][pc][hd][qd][qf][ng]
AW[pb][cc][oc][dd][cf][oh][qh]

;B[qb]C[B1]MN[1]
;W[pd]C[W2]MN[2]
;B[qc]C[B3]MN[3]
;W[pf]C[W4]MN[4]
;B[pg]C[B5]MN[5]
;W[og]C[W6]MN[6]
;B[of]C[B7]MN[7]
;W[pe]C[W8]MN[8]
;B[qg]C[B9]MN[9]
;W[nf]C[W10]MN[10]

;
)
