As an example,
...................AJT4
....62.......................5
...................K873
- Declarer plays the King from hand, and it goes 2, 4, 5 -- all in tempo.
- Declarer now plays 3 from hand, [hesitate]6, Jack, Queen.
This is both illegal and annoying. I consider it an insidious practice that should be roundly condemned. It is so ingrained into some people that they break tempo even when it doesn't matter (e.g. QJT opposite dummy's A32 -- a finesse is worse only if hesitator's partner held singleton K). It gets so blatant sometimes that I type "East has the missing King" before playing low from dummy and watching East win. If I were to guess, West might think it is their duty to break tempo thereby create a guess in my mind -- but most people don't know or don't care that it is illegal.
What can we do to discourage this practice? Would love to hear other people's views.
Note: This is not a complaint about a specific player (or set of players).