[Stephen Tu]

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Apparently can't double with 5 trumps or 4 trumps because partner will pull.

[steve2005]

Why have initial X penalty if it isn't possible to double later. Might as well make it takeout or support.
In other words get rid of unusual vs unusual

[Bermy]

 Stephen Tu, on 2017-August-02, 23:31, said:

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Apparently can't double with 5 trumps or 4 trumps because partner will pull.

Another extreme example of "Gib cannot bid"
What Bidding logic places North in control. Surely by this point in the bidding North knows 4+ D 2- H and less than 3 clubs. What perverse logic removes this obvious penalty double into a take out on a 7 card fit?

How do you beat your partner?

Either defend the contract undoubled.......not good bridge at all, or risk a rubbish contract.

Thanks Partner.......

[steve2005]

Penalizing with Gib is a real crap shoot. Here the bidding system is designed to extract a penalty on hands like this.
But Gib can't co-operate.
Anytime I have triedI have tried to make a penalty double below game you have no idea it you can pull it off even if the description indicates penalty.