(;
GM[1]
SZ[19]
AW[cd][ed][jc][mc][qf][pf][oj][qj][qc][rc]
AB[cj][oc][pc][pd][qe][rd]
LB[rb:D][pe:C][re:B][qd:A][pc:4][rd:2][rc:3][qc:1]
C[Problem 135. White to play.  

The moves from White 1 to Black 4 have been played. White would like to play A - Black B - White C, but Black would then play a tesuji at D, capturing White's stones in the corner. How should White play ? ]
;W[rb]
TE[2]
C[Correct Answer.  

White 1 is the vital point. ]
(;B[rf]
C[If Black defends his weakness by playing 2, ... ]
;W[pb];B[ob];W[pa]
LB[pb:3]
C[... White lives in the corner with 3 and 5. <= ]
)
(;B[pb]
C[Failure.  

Black 2, trying to kill White, is a bad move. ]
;W[qd]
C[White plays 3 and ... ]
;B[re];W[pe]
C[... cuts with 5, winning the capturing race in the corner by one move. <= ]
)
)