(;
GM[1]
SZ[19]
AW[dc][de][hc][he][cj][qc][qd][re][qf][rg][sf]
AB[jc][je][pc][pd][pe][qe][rd][rc][pj]
C[Problem 89. White to play.  

This is a continuation of Problem 86. How should White play ? ]
;W[pf]
TE[2]
C[Correct Answer.  

Pushing up with 1 is the vital point. ]
;B[of]
C[Black blocks at 2 ]
;W[og];B[nf];W[ng];B[mf]
LB[ng:5][og:3]
C[If the thickness White gets on the right side is worth the territory Black gets at the top, she may play 3 and 5. <= ]
)
)