(;
GM[1]
SZ[19]
AW[cd][dc][fc][gb][hb][ic][cn][cq][dq][fq][pn][nn][ph][ng][li][ne][nd][nc]
AB[hc][hd][ie][fd][ed][df][dk][bn][co][dn][dp][pp][np][lp][lc][le][oc][pd][pf][re]
LB[bf:A]
C[Supplement to Problem 130: A big move.  

The stone at A in the Problem Diagram is a big move because it expands White's corner territory while denying Black significant territory on the left side. If White omits it, ... ]
;B[ce]
TE[2]
C[... Black can  secure most of the territory on the left side ... ]
;W[bd];B[ec];W[eb];B[dd]
C[... and make good shape with the sequence to 5, ... ]
;W[cb]
C[... ending in sente. <= ]
)
)