(;
GM[1]
SZ[19]
AW[dc][cd][ce][dq]
AB[cf][de][pp][pd]
LB[cd:4][ce:2][cf:3][de:1]
TR[dc][dq]
C[Problem 33. Black to play.  

This time Black encounters White's mukai-komoku formation (the marked stones) with a high approach move at 1. After exchanging 3 for 4, what should Black do ? ]
;B[do]
TE[2]
C[Correct Answer.  

Black should play another high approach move with 1. ]
(;W[df]
C[It would be natural for White to cut at 2, but ... ]
;B[fp]
C[... then 3 would give Black wonderful influence in the center which combines well with his niren-sei formation on the right. <= ]
)
(;W[co]
C[Variation.  

White could also attach at 2. ]
;B[cn];W[cp];B[df];W[fc];B[dn];W[fq]
C[The sequence to White 8 would then be the natural flow. ]
;B[dj]
C[However, Black 9 becomes an excellent move, making an ideal extension from his stones at the top and the bottom. ]
;W[qj]
C[White would then play 10 on the right side. ]
;B[ql];W[qg];B[qe];W[mc];B[oc];W[nq];B[pq];W[kp]
C[The sequence to 18 is from a game between Takagawa (Black) and Sakata. <= ]
)
(;W[fp]
LB[do:1][cm:A]
C[Variation.  

White could also respond to Black 1 with 2 or a pincer at A. <= ]
)
)