(;
AB[cj][ci][ck][ei][ek][bh][bg][bl][bm]
AW[bi][bj][bk][ak][ai][ch][dh][eh][cl][dl][el]
C[White plays.

Source:
    American Go Journal, Vol. 19, No. 4, November 1985.
    The "Single-Flying Swan" problem, from Guan Zi Pu,
    an ancient Chinese tsumego problem set.];
W[bf]
C[The only move that works!

Chess can produce incredibly beautiful combinations, but only go can produce such beauty with so simple a set of playing rules.]
(;
B[cf]
C[The toughest defense.];
W[cg];B[be]
C[Note that Black has to take an extra move to capture the White stone before being able to atari the 5 White stones below.];
W[cn]
C[So White has this 1 extra key move to capture the 2 Black stones below.];
B[bn];W[bo]
(;
B[bp]
C[Can this tesuji let Black escape with his lower group, thereby dooming the White stones above?];
W[co];B[ao];W[an];B[am];W[cm];B[ap];W[cq];B[bq];W[br]
C[White has cold-bloodedly played nothing but simple slow-looking moves, but Black still loses the semeai by 1 move!

This problem is just one reason why Shania Twain didn't put the game of go in her song of the list of things that don't impress her much.]
)
    (;
    B[co]
    C[The Black cut here doesn't work either.];
    W[bp]
    C[White calmly protects his stone, and when Black's ataris run out, White captures the 3 Black stones.];
    B[cm]
    C[For example, ...];
    W[dn];B[dm];W[em];B[en];W[do];B[fm];W[fl]
    )
)
    (;
    B[cg]
    C[Trying to escape this way makes White's task easy.];
    W[cf];B[dg];W[ag]
    C[And either White's 5 stones connect out to the top left, or White captures Black in a ladder.]
    (;
    B[ah];W[eg];B[df];W[de];B[ef];W[ff];B[ee];W[ed];B[fe];W[ge];B[fd];W[fc];B[gd];W[hd];B[gc];W[gb];B[hc];W[ic];B[hb];W[ha];B[ib];W[jb];B[af];W[ia]
    )
        (;
        B[df];W[ah]
        )
    )
)

