(;
AB[gr][dq][fq][cp][dp][fp][pp][bo][an][cn][pn][bm][cm]
AW[cq][gq][iq][nq][bp][gp][co][do][fo][go][dn]
PL[2]
C[White plays.

Source:
     Tesuji Dictionary, V.2, Ch.1, #41];
W[dr]
(;
B[cr];W[fr]
C[A magical tesuji.  White has 4 isolated stones, but Black cannot avoid a non-trivial loss.];
B[er];W[ep]
C[Finally the punchline.  White has a double atari and Black has a liberty shortage.];
B[ds];W[eq]
C[White breaks through Black's formation to capture 2 stones ... and in sente!]
)
    (;
    B[er]
    C[Trying to keep the entire lower left corner is too greedy.];
    W[br];B[ap];W[aq]
    C[White has a ko, in which Black could lose quite a few more points.]
    )
)

