When partner leads low from length and dummy has small cards, you play high.
However, if your hand has two or three equal cards, you play the lower of those touching cards. eg from K10x, play the king, from KQx, play the queen, from KQJ(x), play the jack.
It is a common fault by many players to always play high. If you play the King when you hold KQJ, you partner will now think the QJ is in the opponent's hand.
Posted: Fri 31 Jul 2015