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System holes.

Hello!

In a thread I started long ago on r.g.b I asked about system holes.

For example, a pair playing precision changes the 2D opening from three suited short diamonds to Multi.

What they do not talk or think about is that 4414 patterns are unbiddable.

When a defender tries to cash AK of diamonds and see declarer who promised 2+ diamonds on the CC ruff the king, he is annoyed.

In my thread on rgb a well known TD told me that this was bad luck for the defender as the bidding pairs agreement was 2+ diamonds and the system hole was there without their knowledge.

No score adjustment, but from then on the bidders have to change their agreements and CC.

 

Is this correct or are system holes like this something the bidders are responsible for even if they do not know about them?

 

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