(;
AB[dc][ec][fd][fe][be][bf][cf][dg][gg][ch][eh][fh]
AW[cc][cd][ce][ed][ee][ef][cg]
PL[W]
C[White plays.

Source:
    From the yose volume of Gokyo Seimyo, a nearly 200 year old problem set.];
W[fc]
C[This kind of cut is a common theme in more than just tsumego.];
B[gc];W[fb];B[gb];W[db];B[eb];W[da];B[ea];W[dd];B[fa];W[ba];B[ab];W[bb];B[ac];W[df];B[cb]
C[Now you should be able to read out White's saving method.  What should White do now?]
(;
W[bc]
C[Correct.  White sacrifices the marked stones.]
TR[da][db];
B[ca]
(;
W[bd]
C[Correct.];
B[ad];W[aa]
C[White finally captures the 3 stones to live.]
)
    (;
    W[ad]
    C[Mistake.];
    B[bd]
    C[White cannot make a 2nd eye.]
    )
)
    (;
    W[ca]
    C[Mistake.];
    B[bc];W[bd];B[ad]
    C[White has a liberty shortage.]
    )
)

