1- Gib N should overcall 2♦ instead of balancing overcall.
2- Strangely, my double says " 1♥,10+hcp,biddable ♦,10-TPs".
I think it is impossible :
If only singleton of ♥,I should respond 1nt,never raise to 2♥.
If I have 10+hcp with 3-card ♥,I should respond 2♣ - Drury while Gib W opens 1♥ in the 3rd seat.
So the correct explanations of my double is "3-4♥,10-hcp,biddable ♦,10-TPs".
P.S.
Please refer to others's hands in the same time.
Hand-A
Hand-B
Hand-C
Hand-D
Hand-E
Hand-F
Hand-G
Now we can draw the following conclusions:
1- Almost of Gibs made balancing overcall except Hand-G.And Gib never overcall 2♦,why?
2- After 3♦,Gib never make penalty double,why?
3-Why did Gib N make passing bid instead of balancing overcall in the Hand-G ? Only exception.