(;AB[dl][em][fm][gm][dn][do][dq][eq][fq]AW[ck][cl][cm][dm][gn][hn][co][cp][gp][cq][gq][iq]C[White plays.

Source:
   Qi Jing Zhong Miao #505, an ancient collection of mostly kyu level life and death problems.

Analysis:
    Myron Souris]SZ[19]

(;W[eo]C[The clamp is the only move!]
(;B[fo]C[Black can clamp White's clamp, but ...];W[ep]LB[en:a][dp:b][fn:c][fp:d]C[... White has 2 pairs of miai:  A,B, and then C,D.]
(;B[en];W[dp])
(;B[dp];W[en])
(;B[fn];W[fp]))
(;B[en]C[Changing the move order doesn't help.];W[dp];B[fo];W[ep]LB[fn:a][fp:b]C[A and B are miai.]))
(;W[en]C[Fails];B[fn]
(;W[eo];B[fo]C[White can capture 2 stones, but Black connects to the bottom stones.])
(;W[ep];B[dp];W[eo];B[fp])))