(;
GM[1]
SZ[19]
AW[db][fc][hd][jc][qc][pf][qf][qj]
AB[cc][dd][df][cj][lc][nd][pd][qe][re]
LB[re:2][qc:1]
C[Problem 146. White to play.  

When White invades at the 3-3 point, Black defends with 2. How does White continue ? ]
;W[oc]
TE[2]
C[Correct Answer.  

White peeps with 1 and, ... ]
;B[od]
C[... after Black connects with 2, ... ]
(;W[nc]
C[... crawls to 3. ]
;B[pc];W[pb];B[qb];W[rb];B[ob];W[qa]
C[Up to 9, White lives ... ]
;B[nb]
C[... in sente. <= ]
)
(;W[pc]
C[Variation.  

White could also live in the corner with 3 ... ]
;B[nc];W[rb]
C[... and 5. She has more territory, but ends in gote. <= ]
)
)