(;
AB[gj][jj][cm][lm][bn][bo][dn][gn][in][jn][kn][ko][kp][kq][kr][ap][cp][dp][mp][bq][eq][nq][nr][jr]
AW[ch][ci][ck][bl][bm][il][kl][ll][ml][nl][fn][fo][go][ho][jo][jp][jq][cq][gq][br][dr][er][ir]
TR[ho]
C[Black's local response to the marked play?

Source:
Go World #23, p. 23
Cho Chikun 9p (Black) v. Otake Hideo 9p
6th Meijin Title, game 6]
(;
B[io]
C[In the game, Black (Cho) mistakenly pushes here.]
(;
W[ip]
C[White (Otake) returns the favor by incorrectly blocking!];
B[hr]
C[After Black correctly clamps, ...]
(;
W[iq]
C[... White connects.];
B[is]
C[And a few moves later, Black comes back here to connect.]
)
    (;
    W[is]
    C[Note that White cannot cut off the stone by descending.];
    B[hp];W[iq];B[hq]
    )
)
    (;
    W[hq]
    C[White should fall back to here.];
    B[ip]
    C[Black can force, but ...];
    W[iq]
    LB[hr:A]
    C[... Black can no longer attach at A.

Compared with the game, this line is almost 3 points better for White.]
    )
)
    (;
    B[hr]
    C[As the previous variation's game line shows, instead of the game move, Black should attach immediately.]
    (;
    W[iq]
    C[This sequence follows.];
    B[is];W[gr]
    C[This result is better for Black than the game line, assuming that White plays correctly.]
    )
        (;
        W[is]
        C[At 1st glance, White may seem able to descend here, but ...];
        B[hq]
        C[... the reader can verify that White doesn't have a good answer to Black's follow-up moves.];
        W[iq];B[gr];W[fr];B[gp];W[fq];B[hp]
        LB[fp:A][io:B]
        C[A and B are miai for Black.]
        )
    )
)

