You should cash the king and lead to the ace. Your sole
concern after West follows small on the second round is
a 4-2 split, with West holding four of them and East
holding a doubleton.

When you lead toward the ace, assume East has one
card left. The queen, jack and a spot card are missing,
so East's remaining card is likely to be the queen or
the jack.

Archives of all back issues of all daily
columns are available with Bridgetoday.com
membership (which also includes 12 issues of
Bridge Today Magazine, 100 archive issues
of Bridge Today Digest Online, and one
Bridge Today University course).
Click here for further details.