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===== Roman Keycard Bids =====

==== Responses to 4NT ====

  * 5C: 0 or 3 KC
  * 5D: 1 or 4 KC 
  * 5H: 2 or 5 KC w/o the trump Q
  * 5S: 2 (or 5) KC w/ the trump Q
  * 5N: even number of KC and a useful void
  * 5x: odd number of KC and useful void in x

==== Continuation ====

Further asking bids from inquirer: 
  * After a response that does not tell about the trump Q (0/3 or 1/4 KCs):
    * 1st (non-trump) step: Q ask
    * 2nd (non-trump) step: specific K ask 
  * After a response telling about the trump Q (2/5 KCs):
    * 1st (non-trump) step: specific K ask

=== Responses to Q ask ===
  * lowest trump bid: no Q
  * any other: have the Q. If possible we try to show lowest specific K (below 6trumps) as well. 
    * E.g. with \h trump after 4NT-5\D-5\S:
      * 5N: has \hQ, no minor K, may or may not have \sK.
      * 6\c/\d: Has \hQ, lowest specific K
      * 6\h: no \hQ
    * With \s trump after 4NT-5\C-5\D:
      * 5\s: no \sQ
      * 5N: has \sQ, no outside K
      * 5\h, 6\c/\d: has \sQ, lowest specific K.
    * With \d trump after 4NT-5\D-5\H:
      * 5\s, 6\c: has \dQ, shows lowest K
      * 5N: has \dQ, no black Ks, may or may not have \hK.
      * 6\d: no \dQ

After a K showing response, if inquirer bids a new suit, it asks responder to bid the grand if he has that K, too. Over an ambigous 5N the next non-trump step asks to bid the grand if responder has a K. 
  
=== Responses to specific K ask ===

  * 7 trump shows 3 outside Ks
  * lowest trump shows no outside Ks
  * a suit shows either that K or the other 2.
    * for example given \h trumps, after 4N-5\d-5N:
      * 6\c: \CK, or both \D and \S Ks
      * 6\d: \DK, or both \C and \S Ks
      * 6\s: \SK, or both \C and \D Ks (inquirer must be careful!) 
  * 5N shows the lowest K one step over the trump suit 
      * for example given \d trumps, after 4N-5H-5S:
        * 5N: \HK
        * 6\c: \CK or both \H and \S Ks
        * 6\h: both \C and \S Ks
        * 6\s: \SK or both \C and \H Ks
  
==== If opponents overcall 4NT ====

We play D0P1/R0P1:
  * Double/Redouble: 0 or 3 KC
  * Pass: 1 or 4 KC
  * 1st step: 2 or 5 w/o the Q, etc.

Continuation is as before.

===== Italian Cuebids =====

The main purpose of Italian style cuebidding is to avoid bidding a slam if we have two quick losers in a side suit. To avoid this we use Italian Cuebids to show our controls: 
  * A control is either an A, a K, a singleton, or a void in the suit bid.
  * We always bid the cheapest suit we have control in, a bypassed suit denies first or second round controls.
  * If we bypassed a suit, and partner continues cuebidding, it shows that partner has a control **both** in the suit that was bypassed and in the suit he showed control in.
  * We avoid cuebidding shortness in partner's known long suit.

===== Serious 3NT =====

After an at least 8 card major card fit is guaranteed by the bidding, the partnership cannot stop in 3NT, it cannot be an offer to play in 3NT instead of 4M. Instead we use the 3NT bid in such situations to indicate serious slam interest, demanding partner to start cuebidding. It also has a negative implication when 3NT could have been used, but a 4-level CB was used instead - it is just a courtesy CB, with no serious slam interest.

====Examples====

^Opener^Responder^Description^
|1\H|2N | |
|3\C|?  | |
|   |3\S| \S CB, does not limit the hand |
|   |3N | Serious slam interest, denies \S control, demands CB (if partner has \S control) |
|   |4\C| Courtesy CB, partner can bid 4\H even with \D control |

^Opener^Responder^Description^
|1\D|1\S| |
|2\S|2N | |
|3\H|3N |S3N, demands CB|
|   |4\C|Courtesy CB, partner may stop in 4\S w/o extras|