(;
AB[cp][dp][fp][fo][fn][gn][in][dj]
AW[cq][dq][fq][gq][go][gp][cn]
TR[cn]
PL[W]
C[White plays.

Source:
    Go World #18, p. 37
    Advanced Tesuji Problems, #8]
(;
W[ep]
C[The correct idea, but the wrong move order.];
B[eo];W[bp];B[eq]
C[Black can dodge to capture here.];
W[er]
C[After White blocks, ...];
B[bo]
C[... Black's hane cuts off the lone stone.]
)
    (;
    W[bp]
    C[Correct.];
    B[bo]
    (;
    W[bq]
    C[But playing the normal move is a big mistake.];
    B[co]
    C[Black seals off the left side territory.]
    )
        (;
        W[co]
        C[The tesuji!];
        B[bq]
        C[Black can capture this stone, but ...];
        W[ep]
        C[... White has several forcing moves.];
        B[do];W[eo];B[dn];W[en];B[dm];W[em]
        C[White storms into Black's left side territory.  And Black owes another move in this area to prevent White from doing even more damage.  This result is a great success for White.]
        )
    )
)

