(;
AB[dd][pd][pp][pj][dj][dp][jj][dn][jp][np][po][no][df][ek][el][do][dq][jo][jn][jm][il][on][mc]
AW[fq][nq][oq][pn][mp][ko][fc][jd][pl][hq][ho][fl][fm][eo][kn][km][qr]
TR[pl]
C[In this 7 stone handicap game, what is Black's response to the marked play?

Source:
    "Masterpieces of Handicap Go"
    Kobayashi Koichi 9P vs. Sakai Naoki 2d
    American Go Journal, Vol. 30, No 4, pp. 24-25]
(;
B[pm]
C[In the game, Black played this very weak-spirited move.];
W[ol];B[qn];W[ql]
C[Allowing White to thrust through Black's sphere of influence like this is not appealing.];
B[nm]
C[While Black scrambles out, ...];
W[ph];B[nl];W[oj]
C[... White takes the initiative in the upper right, where Black used to have the upper hand.]
)
    (;
    B[qn]
    C[Correct.  The atari from this side is proper.]
    (;
    W[pm]
    C[Connecting here to continue the attack is unreasonable.];
    B[ol]
    C[Black has this memorable squeezing sequence.];
    W[ok];B[pk];W[om];B[nm];W[nl];B[ql]
    )
        (;
        W[nl]
        C[White can jump to here to try to split the right side, but ...];
        B[ql]
        C[... Black has another nice tesuji sequence!];
        W[qk];B[pk];W[qm];B[rl];W[pm];B[rm]
        C[Black connects underneath.]
        )
        (;
        W[rl]
        C[White can prevent Black's connection underneath, but ...];
        B[ol]
        C[... Black can now connect on top.];
        W[qi];B[pk];W[qk]
        C[White's best moves seem to be to run away up the right side.];
        B[pm];W[ql]
        C[And if White persists, ...];
        B[qg]
        C[... with Black's stronger group below, Black can harass the right side group here. ]
        )
    )
)

