(;
AB[db][eb][gb][gc][gd][hb][cc][ec][fd]
AW[da][cb][ib][bc][dc][dd][hc][hd][he][jc][ed][fe][ge]
C[Black plays.

Source:
Go World #28, p. 53,  Summer 1982
Basic Fighting Techniques
Miyazawa Goro]
(;
B[ha]
C[Trying to increase eye space with the following obvious sequence fails.];
W[fa];B[fb];W[ea]
C[Black has nothing.]
)
    (;
    B[bb]
    C[Many players might spot the following sequence for Black.];
    W[cd];B[ba];W[ha]
    C[But White can hane here, and ...];
    B[ca];W[ab]
    C[... Black has to fight a ko for life.

Black can do better!]
    )
    (;
    B[cd]
    C[Sacrificing another stone is the only move.

At first glance, this tesuji seems to have no benefit.];
    W[ce];B[bb]
    C[But Black can come back here with the 2 forcing moves from the previous variation.];
    W[bd];B[ba]
    (;
    W[ha]
    C[Now when White hanes here, ...];
    B[ca];W[cc];B[ab]
    C[... Black makes an eye in the corner to live!]
    )
        (;
        W[cc]
        C[Instead, White would probably connect here, but then ...];
        B[ha]
        C[... Black can descend to catch White in a liberty shortage.];
        W[fa];B[fb]
        LB[ca:A][ea:B]
        )
    )
)

