(;
AB[mc][dd][nd][od][pd][qd][df][jj][pn][dp][pp]
AW[mb][fc][kc][nc][oc][qf][nq]
C[Black's response to the marked move?

Source:
    "What's Wrong With That Move", Nakayama Noriyuki 7P
    American Go Journal, Vol. 35, No. 2, p. 39.]
TR[mb]
(;
B[lc]
C[Most players know that this push is bad.  But why?];
W[lb]
C[Now the shape is equivalent to White hitting the head of 2 stones, which is bad for Black.  But why?];
B[kd]
(;
W[jc]
C[Black naively expects White to submissively extend here.];
B[qj]
C[And then Black can pincer on the right.]
)
    (;
    W[jd]
    C[But White's 2 step hane foils Black's plan.];
    B[ke];W[je];B[kf];W[jf];B[kg]
    C[After Black ends in gote, ...];
    W[qi]
    C[... White has an extra move to support the right side stone.

Black has already lost a significant portion of the advantage from the 5 stone handicap.]
    )
)
    (;
    B[md]
    C[If Black intends to take sente, this solid connection is much better.]
    (;
    W[lb]
    C[One way for White to defend is here.];
    B[qi]
    C[Now Black has a desired pincer somewhere on the right side.]
    )
        (;
        W[ob]
        C[White can also defend here.];
        B[qi]
        C[But regardless, Black still has a right side pincer.]
        )
    )
)

