(;
SZ[13]
AB[dk][ek][fk][ej][hk][di][dh][ch][bg]
AW[ck][cj][ci][bh][df][ei][fj][fi][dj]
C[White's response to Black's marked play?

Source:  "Tesuji", Ch. 4, pp. 67-68,
         James Davies, Ishi Press]
TR[bg]
(;
W[cg]
C[Best!];
B[bi];
W[ah]
(;
B[ag]
C[If Black persists in trying to kill White...];
W[eh]
C[White forces Black into a
one-way street.];
B[ai];
W[bh];
B[ah];
W[dg];
B[bh];
W[bf];
B[cl];
W[bk];
B[bl];
W[aj]
C[And Black's position collapses.]
)
    (;
    B[eg]
    C[Killing White is not possible, so Black
should run out here.];
    W[bf];
    B[cl];
    W[bj];
    B[bk];
    W[aj];
    B[ef]
    C[Black's corner profit and center
influence balance White's side
profit.]
    )
)
    (;
    AE[hk][fk][ek][ej][di][dh][ch][bg][bh][cj][ck][dj][fi][ei][df]
    W[fj]
    C[The problem position arises after the
taisha joseki given here in the lower
left corner.];
    B[di];
    W[dj];
    B[ej];
    W[cj];
    B[ek];
    W[ei];
    B[dh];
    W[ck];
    B[fk];
    W[fi];
    B[hk];
    W[df];
    B[ch];
    W[bh];
    B[bg]
    )
)
