(;
AB[fb][ec][ed][cd][dd][id][dj][qk][dn][po][dp][qp][qq][cq]
AW[db][dc][eb][cc][fc][gc][qc][op][fq][iq][pq][dr][qr][rr]
PL[B]
C[Black plays.

Source:
American Go Journal, v. 35, no. 1, pp. 30-32
"What's Wrong With That Move?"
Nakayama Noriyuki 7P]
(;
B[qe]
C[Certainly a big move.  For example, just compare the right side, if instead, White has the chance to play the blocking extension at A first.

However, ...]
LB[qi:A];
W[od];B[pg];W[ge]
C[... White has sent to make this really good jump.];
B[dg]
C[After Black defends, ...];
W[ld]
C[... White combines attack with defense.  This result looks a little unpleasant for Black.]
)
    (;
    B[gd]
    C[Black can try this joseki move, but the following game sequence indicates that this move is a mistake.];
    W[bd]
    C[White hanes here first.]
    (;
    B[fd];W[be]
    C[White upsets Black's left side formation.];
    B[gb];W[qi]
    C[Now White can take the big right side point.];
    B[ok];W[hc];B[hb];W[kc];B[jb];W[od]
    C[After making this top right formation, White has an adequate opening.]
    )
        (;
        B[be]
        C[Because of the thin wall, Black cannot block here.];
        W[fd];B[fe];W[ge];B[ff];W[hd]
        C[This result is not good for Black.]
        )
    )
    (;
    B[fd]
    C[Simply pushing here is the proper joseki.];
    W[gd];B[ge]
    (;
    W[gb]
    C[With this proper move, White builds strength for later, but ...];
    B[he]
    C[... Black can emphasize the left side moyo.]
    )
        (;
        W[hb]
        C[This kosumi is improper.];
        B[hd]
        LB[ib:A]
        C[Black can reduce White's liberties, and can aim at attaching at A later.]
        )
    )
)

