(;
AB[qd][oc][qg][qk][pp][oq][op][np][mo][lo]
AW[cq][cc][qi][qn][on][no][mn][nq][mp][lp]
TR[lp]
C[Black's response to the marked play?

Source:
    Go World #17, p. 6
    4th Meijin Title
    Otake vs. Sakata (White)]
(;
B[kp]
C[The natural move is to hane, but ...];
W[kq];B[ko];W[lr]
C[... White simply defends, and now threatens the corner.];
B[nr]
C[So Black must defend.];
W[iq]
C[White has sente to extend, which just about settles his group, while leaving Black's 4 stones floating in the center.]
)
    (;
    B[ko]
    C[Black might also try simply extending, but ...];
    W[kp];B[jo];W[nr]
    C[... White's descent here is troublesome.];
    B[jp]
    C[Yes, Black now has nice forcing moves around here, but ...];
    W[jq];B[iq];W[or]
    C[... Black's corner is in danger.];
    B[pr]
    C[For example, simply blocking is bad.];
    W[qq]
    C[This peep is severe.]
    )
    (;
    B[ln]
    C[So in the game, because of the problems with the other local moves, Otake chooses to push up in this direction.];
    W[mm];B[lm];W[kp];B[qo]
    C[Black comes back to defend the corner.];
    W[rn];B[nr]
    C[Locally, Black finishes the corner by defending on the other side.  Note that Black cannot permit White to descend here.

Otake (Black) goes on to win the game, after some Sakata slip-ups.]
    )
)

