Multi-Cues : Facts sheet
(Also known as "control bids")
1. After a trump suit has been agreed and the bidding is forced to the Game level (usually at the 4-level) the bid of a new suit is a multi-cue bid.

2. A multi-cue bid shows 1st or 2nd round control in the suit bid
an Ace or a King or a Void or a Singleton

3. Multi-cues are not shown for the agreed trump suit.

4. Multi-cues are bid up-the-line, skipping a suit denies a control in that suit.

5. After a player has skipped a suit, Partner only makes another multi-cue bid when he also holds 1st or 2nd round control in the skipped suit. If not he signs off in the trump suit.

6. With no more controls to show sign off in the trump suit.

7. Multi-cues may be followed by Blackwood (or RKC Blackwood) to check on the Aces.

8. After a trump agreement in a minor suit a new bid below 3NT is not a cue bid, it merely shows a stopper for a possible 3NT contract.
1♣ - 3♣ - 3♦ (= stopper)

Roman Keycards Blackwood
1. RKC Blackwood is especially effective after a Multi-Cues bidding sequence.

2. RKC replies are used after 3NT or 4NT Blackwood, Minorwood and Voidwood.

3. There are 5 keycards : the 4 Aces plus the Trump King.
The Trump Queen can also be shown.

4. RKC replies are:
• Step 1 = 1 or 4 keycards (Note : 1430)
• Step 2 = 0 or 3 keycards
• Step 3 = 2 keycards without the trump Queen
• Step 4 = 2 keycards with the trump Queen

5. For example :
 After 1♥ - 3♥ - 3NT - ? 4♣ = 1 or 4 kaycards 4♦ = 0 or 3 keycards 4♥ = 2 keycards without the Q♥ 4♠ = 2 keycards with the Q♥ After 1♦ - 3♦ - 4♦ - ? 4♥ = 1 or 4 keycards 4♠ = 0 or 3 keycards 4NT = without the Q♥ 5♣ = 2 keycards with the Q♥
6. After a Step 1 or Step 2 reply, the cheapest bid, except for the trump suit, asks for the Trump Queen.
1. Next step = "I don't have the trump Queen"
2. Following step = "I do have the trump Queen"

7. Asking for Kings is the same as for standard Blackwood, but the trump King is not counted.