Ruff (cards) - Ruff and Discard

Ruff and Discard

A ruff and discard (also known as ruff and slough or ruff and sluff) occurs when a player leads a suit that neither opponent has - typically in a suit contract, a defender leads a suit in which dummy and declarer are both void and dummy and declarer have at least one trump each. This gives declarer the option of discarding a losing card from one hand while playing a trump from the other, usually garnering an additional trick in the process. Thus, the ruff and discard is generally to be avoided by the defenders, except in rare cases where declarer has no side suit loser to discard. It is often inflicted upon the defence via an endplay.

In the position shown, West is on lead and spades are trumps: When West leads a heart, declarer can ruff in one hand and throw a club loser from the other, making both the remaining tricks. With any other player on lead, declarer would only make one trick.

However, if one of N-S hands had a diamond instead of a club, then West's lead would make no difference: the declarer can always take the remaining two tricks by crossruffing clubs and diamonds.

Similar events can occur in other trick taking games where partnerships exist (e.g. whist) and occasionally for the defending side in bridge.