(;
GM[1]
SZ[19]
AW[cb][db][cc][ce][cf][be][af][bg][fc][fd][fe][pc][pe][qj][pp][jp]
AB[bh][cg][df][de][dd][dc][ec][eb][gd][gb][id][ld][lg][eq][cp][dj]
C[Problem 166. White to play.  

How should White play ? Aim at the cutting points on the left side ? Pull out the three stones within Black's moyo ? Is there some other overall strategy ? ]
(;W[li]
LB[lj:A]

TE[2]
C[Correct Answer.  

If White did nothing, a two-space jump at Black A would be a marvellous move. Therefore, White must stop Black somewhere along this line, and the cap of White 1 is the vital point in this battle of moyos. ]
;B[jh]
C[If Black 2, ... ]
;W[jj]
C[... White continues with 3 and White is following a winning grand strategy. <= ]
)
(;W[fg]
C[Failure.  

A move like 1, where White tries to pull his stones out of the pit of Black's moyo, ... ]
;B[gi]
C[... is a losing strategy. <= ]
)
(;W[pq]
C[Failure.  

Locally, White 1 is a big move, but ... ]
;B[lj]
C[... in this game Black 2 is so big that White must first deal with is before anything else. <= ]
)
)