(;
GM[1]
SZ[19]
AW[gc][lc][jd][nb][qf][pf][qj]
AB[dd][ec][cf][nd][pd][pb][qe]
C[Problem 141. White to play.  

How does White invade the corner ? ]
;W[oc]
TE[2]
C[Correct Answer.  

White first peeps at 1. ]
;B[od]
C[Black must defend at 2 to avoid being confined to the corner. ]
;W[qc]
C[White then invades at 3. ]
;B[pc];W[re];B[rd];W[qd];B[rc];W[pe];B[qb]
LB[qc:3]
C[After White 3, the moves to Black 10 are inevitable. White is satisfied because her stones on the right have become strong. <= ]
)
)