(;
AB[kh][lh][li][lk][ll][kl][il][hl][hk][hi][hh][ih][ff][hf][if][jf][kf][lf][nf][nh][ni][nj][nk][nl][nn][ln][kn][jn][in][hn][fn][fl][fk][fj][fi][fh]
AW[jj]
C[White to escape with the center stone.  But White alternates making 2 moves with Black making just 1 move.

Source:
    From Susuki Tamejiro 8p's tsumego book from 1920.];
W[mg];W[gm];B[mm]
C[Black blocks 1 of the 4 escape routes.];
W[gg];W[ii]
C[A brilliant tesuji!  White simultaneously threatens to run out into the top row or the left column.];
B[hj];W[jg];W[jh];B[lg]
C[Black blocks the upper right exit, but ...];
W[ig];W[hg]
C[... White is now almost out!];
B[gf];W[fg];W[eg]
C[White escapes!]
)

