Release 2.19r
2023 Level 4 changes and 2022 Announcing/ Alerting Rules

See David's 2023 summary of Level 4 2023 changes, see complete revised Blue Book.

Some changes in the EBU announcing/alerting September 2022. David drew up a summary of the 2022 changes for directors.

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Trial Bids
Game Try bids, Cue bids, Opposition suit bids

.From one of Robin's lessons in 2017

1) What is a game try bid?

You   Opposition   Partner   Opposition  
You open 1 of a suit   Pass   2 of that suit   Pass  
i.e.              
1♠   Pass   2♠   Pass  
               
A new suit is a request to Partner!              
1♠
3♣
      2♠    

This bid asks Partner what his holding in the club suit is, and is called a trial bid (a Game Try). It will always have 3+ clubs. It will be made on an opener's  hand such as:
A Q 7 4 2    
A 10    
A J 10    
7 4 2   

 

Partner will help the conversation by bidding as follows:

1♠
3♣
      2♠
3♠ (sign off)
    Responder Hand 1:
K 7 2    
7 5 4    
K 6 4 2    
8 6 5
minimum, only 3 card spade support, 3 losing clubs. You do not want to be in game
               
1♠
3♣
      2♠
**3
    ** Responder Hand 2:
K 9 8 4    
6    
K 8 7    
10 9 8 5 3
8 losers; you should have bid 3S over 1S. So now, bid 3 – a feature – probably a singleton, showing a suitable hand, and telling partner that you want to be in game.
               
1♠
3♣
      2♠
3♠ (sign off)
   

Responder Hand 3:
10 9 8 3    
K Q 4    
5    
8 6 5 3
Again, a minimum, but with 8 losers. However, this time, they are the wrong 8 losers. If partner had bid 3 (seeking help in the diamond suit), you would have bid 4S direct.

               
1♠
3♣
      2♠
4♠ (bid game)
    Responder Hand 4:
J 10 9 8 5    
K 10 8    
8 7 6 4    
6
The singleton club is sufficient to jump to 4S. Although you have got 9 losers, you have a decent 5 Card trump suit. When Partner makes a game try/trial bid, your best possible holding is a singleton,
In the suit of the trial bid.
               
1♠
3♣
      2♠
****4♠
    Responder Hand 5 :
J 10 9 8 5    
6    
8 7 6 4 2    
A K
**** With only 7 losers, you should NOT have only bid 2S on this hand. You should have bid 4♠ directly. So, obviously, you would bid 4♠ now.
               
1♠
3♣
      2♠
4♠
(On general values)
    Responder Hand 6 :
K J 10 6    
8 7 6 3    
K Q 7    
5 2
This was a very good 8 loser hand, with all the points working – K J of trumps excellent, the King and Queen are in the same suit, also a strong holding. You can see 10 tricks – 5 trumps, a , 3s
and a ruff in dummy.
               
Also.
             
1♠
3♣
  2♣   2♠   Pass Equally, this bid of the enemy suit is also a game try, again it should be made on a similar hand to the one above.