(;
AB[dp][dd][pd][pp][fp][qd][rd][qe][od][pf][of][qg][qh][rf][nh][qj][qk][rk][pk][ok][oo][nn][om][jq][cj]
AW[cn][jc][mc][nc][pc][qc][re][rg][rh][qi][rj][pi][pj][pg][ni][nj][qn][nq][no][mo][mn]
C[Black's response to the marked play?

Source:
    American Go Journal, Fall 1989, Vol. 23, No. 4, p. 28
    "Masterpieces of Handicap Go"
    Kato Masao (age 11)  vs.  Shiratori Sumiko 3p]
TR[ni]
(;
B[co]
C[Big but not best.  Kato (as an 11 year old) played this move in the game.

Last week's problem (much earlier in this game though) suggested this as the best move to put pressure on the White stone.  But now, later in the game, the right side has become more important.];
W[nm]
C[White takes the initiative on the right, while leaving the left side stone as light.];
B[on];W[qq]
C[And White seizes the big lower right corner.]
(;
B[qp]
C[Kato plays in the wrong direction again.];
W[rp];B[ro];W[rr];B[sp];W[rq];B[qo]
C[White has raided the corner and settled his lower group in sente.  And Black really only has about 10 points of territory on the lower right side.]
)
    (;
    B[pq]
    C[To make the best of the position, Kato should have played here.];
    W[qp];B[ml]
    C[At least Black can then take the strategic point here to salvage the situation somewhat.]
    )
)
    (;
    B[ml]
    C[The best point on the board.  Black moves out into the center while simultaneously threatening the weak White groups above and below.  White has a difficult fight ahead.]
    )
)

