(;
AB[en][eo][dp][gp][dq][eq][hq][iq][dr][gr]
AW[fo][go][ho][ep][hp][jp][fq][jq][er][fr]
C[Black plays.

Source:
   Qi Jing Zhong Miao #439, an ancient collection of mostly kyu level life and death problems.

Analysis:
    Myron Souris]
(;
B[es]
C[The correct move order.];
W[fs]
C[If White tries to separate the Black groups, ...];
B[fp]
C[... Black can now capture to put White in a shortage of liberties.]
)
    (;
    B[fp]
    C[Bad timing.  A nice example of how innocently interchanging moves can fail!];
    W[gq]
    C[Now White can wedge in here to cut off some Black stones.]
    (;
    B[fs]
    C[Black can try to connect underneath.];
    W[ep];B[es];W[hr]
    C[But White captures some stones.]
    )
        (;
        B[ep]
        C[Even worse.];
        W[hr]
        C[White makes some bottom territory.]
        )
    )
)

