(;
AB[en][fn][gn][eo][ho][dp][fp][fq]
AW[fo][go][jo][ep][eq][gp][cq][dq][jq]
C[What is Black's best local sequence?

Source:
    Go World #21, pp. 55-6]
(;
B[hp]
C[Black has this forcing move, and ...];
W[gq];B[hq]
C[... Black has another forcing move, but ...];
W[fr]
LB[hr:A][hn:B]
C[... after White captures, White has both the connection with A and the cut at B.

White can do better.]
)
    (;
    B[hq]
    C[The key point.];
    W[gq];B[fr]
    C[Next, Black sacrifices a 3rd stone for an extra liberty.];
    W[gr];B[hr]
    C[Now Black can force here in sente.];
    W[er];B[hp];W[fs];B[im]
    C[After protecting the cut, Black is satisfied.]
    )
)

