(;
AB[pd][jd][pj][nm][pn][pp][qq][kp][dm][fp][gp]
AW[dc][ce][dj][hc][no][nq][pr][kr][dp][fo]
PL[W]
TR[fp]
C[White's response to the marked play?

Source
    Go World #14, pp. 40-41
    1978 Canadian Open Go Championship
    Se Ju Lee (Black)  vs.  Paul Selick
    Commentary Sakai Masanori 4P]
(;
W[eo]
C[The game move, but inferior.  White has another move that defends the corner better.  See the variation.];
B[fl]
(;
W[gn]
C[The game move, but bad style.  See the variation.];
B[mp]
C[Black has time to pressure the bottom group.];
W[np];B[kq];W[lr];B[jr]
C[Now Black threatens the bottom right group.]
(;
W[iq]
C[White incorrectly ignores the threat in order to counter-attack.  But White is at a disadvantage in this fight.  See the variation.]
)
    (;
    W[qr]
    LB[qo:A]
    C[Instead, White should extend here to defend.  Not only is this move large, but also later White can aim at the placement at A.]
    )
)
    (;
    W[go]
    C[Correct.  White can do better by pressing down here.];
    B[hp]
    C[Black must extend, but ...];
    W[fj];B[hl];W[in]
    C[... White can jump out to keep pressure on the left side group.]
    )
)
    (;
    W[ep]
    C[Correct.  This move defends the corner better, and ...];
    B[eo]
    C[... if Black cuts, White can fight as the following sequence shows.];
    W[go];B[hp];W[do];B[en];W[ho];B[ip];W[gk]
    )
)

