(;
AB[es][dr][fr][hr][fq][iq][bp][cp][ip][do][io][cn][en][fn][hn][qn]
AW[cs][cr][er][jr][cq][eq][kq][dp][fp][gp][jp][np][pp][eo]
C[White plays.

Source:
    Tesuji Dictionary, V.2, Ch.3, #11

Analysis:
    Myron Souris]
(;
W[hq]
C[The only move!]
(;
B[gq]
C[Black seems to have connected his stones.  Surely, White is dead?]
(;
W[gs]
C[A counter-intuitive follow up!]
(;
B[gr];W[ir];B[hp];W[ds]
C[First, White cuts here to make an eye.
White's move order must be perfect!];
B[bq]
C[Then if Black ruins the eye in the corner, ...];
W[hs]
C[... White catches Black in a liberty shortage to connect underneath.

A truly amazing connection sequence!]
)
    (;
    B[hp]
    C[Eliminating the shortage of liberties is too slow.];
    W[bq]
    C[White trivially makes 2 eyes.]
    )
    (;
    B[hs]
    C[This move seems to solve Black's previous liberty shortage problem ...];
    W[bq];B[ds];W[dq]
    C[... but White catches Black in a shortage of liberties to make a 2nd eye.]
    )
)
    (;
    W[ir]
    C[Bad timing];
    B[hp];W[gs];B[fs]
    C[Black can dodge to here.  White does not have time to make 2 eyes.]
    )
)
    (;
    B[ir]
    C[Too slow.];
    W[ds]
    C[First, White cuts to make an eye.];
    B[bq]
    C[Then if Black ruins the eye in the corner, ...];
    W[gr]
    C[White wedges in here to catch Black in a shortage of liberties.];
    B[gs];W[gq]
    C[White lives.]
    )
)
    (;
    W[bq]
    C[Bad timing.];
    B[ds]
    C[Black eliminates the shortage of liberty problems.]
    )
    (;
    W[ds]
    C[Also bad timing.];
    B[bq]
    C[Black eliminates the 2nd eye in the corner.];
    W[hq]
    C[This key move no longer works.];
    B[gq]
    C[Black's refutation is simple.]
    (;
    W[ir];B[hp];W[gs];B[hs]
    C[Black can dodge to here.  White can no longer connect underneath.]
    )
        (;
        W[gs];B[ir]
        C[Now Black can dodge to here.  White can no longer connect underneath.]
        )
    )
)

