Vinge Trump Echo
All bridge hands of 13 cards must be one of 2 possible distributions:
1) 3 suits with an odd number of cards
1 suit with an even number of cards
or
2) 3 suits with an even number of cards
1 suit with an odd number of cards
So, playing Vinge Trump echo's, a Hi-Lo in the trump suit shows 2) above, 3 even suits, and playing up the line in trumps shows 1) above, 3 odd suits.
Compiled by Lorne Russell 2005