(;
AB[cp][dp][dq][fp][bo][cm][cl][bl][bk][ck][bj][bh][ch][ei]
AW[cq][bp][co][cn][dm][en][dl][dk][cj][bm][al]
C[White plays.

Source:
    "Tesuji", James Davies, chapter 7, section 3]
(;
W[bi]
C[A simple tesuji, but very easy to overlook!  White makes miai of taking the corner or capturing the 6 left side stones.]
(;
B[ci]
C[Black can save his 6 stones on the left side, but ...];
W[bq]
C[... then White takes the lower left side.];
B[bn]
C[Note that a shortage of liberties keeps Black from cutting off White here.];
W[am]
C[And White captures the 2 left side stones.]
)
    (;
    B[bq]
    C[Because the corner is bigger, Black has to let White capture his 6 stones on the left side.]
    )
)
    (;
    W[bn]
    C[Slack.  White misses the big tesuji.];
    B[bq]
    C[Now Black has time to force here to save most of the corner.  And White can no longer capture the 6 left side stones.]
    )
)

