(;
AB[pb][qb][mc][qc][jd][kd][pd][qd][le][me][ne][oe]
AW[ob][jc][kc][oc][pc][ld][md][nd]
C[Black plays.

Source:
    Problem #51 from the yose volume of Gokyo Seimyo, a nearly 200 year old problem set.];
B[lc]
C[Black's only chance to cause a big problem is to cut here, but ...];
W[nc]
C[... Black seems to be short liberties.];
B[mb];W[nb];B[ma];W[la]
C[White has this standard tesuji to keep Black short of liberties.  Black seems to have no resources left.

In a game, even strong players might stop reading here.];
B[kb];W[na]
C[White captures the stones, but ...];
B[jb]
C[... suddenly, Black's plan becomes clear!];
W[lb]
C[White captures the 4 stones, but ...];
B[ic]
C[... Black uses the sacrifice to surround White's group.  White dies!]
)

