Trump Revoke
A player does not follow to a trump. Later in the same hand the same player now trumps a card.
- If the discard was a heart and a heart was trumped later is that still a 2 trick transfer?
- If the discard was a heart and a club was trumped later (that player having no clubs) is that a one trick transfer or two?
Comments
In both cases:
The trick on which the revoke occurred was not won by the offending player so 64A1 does not apply. .
There is a single trick transfer under 64A2. (I am assuming the player won the subsequent trick when they trumped it).
Thus there is a one trick transfer.
The director can further adjust the score under 64C.
Revoking and retaining a trump is really no different to revoking and retaining a card in what would otherwise be declarer's long, running suit. The effect of either, is that a player gains the lead and, possibly, other tricks which would have been impossible to gain without gaining the lead with the withheld card.
The director has to examine the hands to "restore equity" and ensure that the non-offending side is not damaged by the revoke. Sometimes, this will be relatively trivial and the one-trick transfer of 64A2 is adequate to restore equity.
You could even have a case whether the non-offending side is not damaged at all by the revoke. For example, a defender has a singleton Queen of trumps and revokes when the Ace is played but follows suit when the King is played or ruffs in and is over-ruffed by the King, with no loss to declarer. The one-trick transfer still applies and results in one extra trick to declarer. Remember always, though, that tricks prior to the revoke may not be transferred to the non-offending side.