(;
AB[dd][pd][pp][pj][dj][dp][jj][dn][jp][np][po][no][df][ek][el][do][dq][jo][jn][jm][il][on][mc][pm][qn]
AW[fq][nq][oq][mp][ko][fc][jd][pl][hq][ho][fl][fm][eo][kn][km][qr][ol][ql]
TR[ql]
C[In this continuation from last week's problem concerning 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, p. 25]
(;
B[nm]
C[In the game, Black played this weak-spirited move, perhaps too worried about the safety of his lower right group.];
W[ph]
C[Now White leaps at the chance to take charge of the right side.];
B[nl]
C[Black completes the pull out of the lower right group, but ...];
W[oj]
C[... White eliminates the problem of weak stones on the right side.];
B[qg]
C[Black pressures from the outside, but ...];
W[qh];B[rh];W[pg];B[qf];W[ri]
C[... White's group is now nearly settled.]
(;
B[sg]
LB[rj:A]
C[Black is looking to continue the attack, but again Black misjudges the strength of a group.

Black is aiming at A, but because White is not confined from the outside, Black has little hope of seriously endangering the group.];
W[kl]
C[So White has another chance to cause problems, this time by ruining Black's center group shape.

By keeping the game complicated, White was able to go on to win the game.]
)
    (;
    B[db]
    LB[kl:A]
    C[Instead, Black should take the largest point on the board here.  White would have a tough time catching up on territory.

Note that Black could also take the thick point at A.]
    )
)
    (;
    B[ph]
    C[Instead, Black should stand up here to keep White from easily taking advantage of the upper right side.];
    W[nm]
    C[If White attacks the lower right, then ...];
    B[op]
    LB[pq:A][pr:B][mq:C]
    C[... creating an eye here is good.  Next, Black can aim at the sequence A, White B, Black C.

With Black's lower right group being safe, and Black's upper right side being stronger, White would be running out of places to catch up in territory.]
    )
)

