Dummy is declarer's partner. He becomes dummy when the opening lead is faced.

(Laws of Duplicate Bridge 2017, Definitions)

After the auction is concluded, and before the opening lead is made, the future dummy:

  • should (if asked) give a complete review of the auction
  • answer questions about the calls made
  • correct any misexplanations given by partner during the auction.

    For example, you might say: "partner should (not) have alerted my call"

Law 41D

"After the opening lead is faced, dummy spreads their hand directly in front on the table, face up,
sorted into suits, the cards in order of rank with lowest ranking cards towards declarer, and in
separate columns pointing lengthwise towards declarer. Trumps are placed to dummy’s right"

Law 45B

Declarer plays a card from dummy by naming the card, after which dummy picks up the card and
faces it on the table.

DO play the nominated card clearly: pick it up, place it apart from the other cards

DO NOT play a card that declarer has not nominated

DO NOT look at other players' cards

Law 43A1c

Dummy must not participate in the play, nor may he communicate anything about the play
to declarer.

DO try to prevent an irregularity, such as a lead out of turn.

DO tell partner he has placed a played card wrongly – "we won that trick, partner"

DO try to prevent partner from revoking – "having no peaches, partner?"

Law 43A1c (continued)

Dummy must not participate in the play, nor may he communicate anything about the play
to declarer.

DO NOT draw attention to an irregularity after it has happened

If someone has led out of turn say nothing – only an active player can object

If you think a defender has revoked: say nothing till the end of play

Never call the director on your own initiative