[fuburules3]

http://tinyurl.com/83xfveb

What is my bid over 2♣ in GIB? It seems both 2,3, and 4 ♦ are natural bids and if I bid 2♠ it thinks I have 5♥ and insists that hearts are trumps.

[cloa513]

fuburules3, on 2012-March-12, 03:02, said:

http://tinyurl.com/83xfveb

What is my bid over 2♣ in GIB? It seems both 2,3, and 4 ♦ are natural bids and if I bid 2♠ it thinks I have 5♥ and insists that hearts are trumps.

Don't start that way- bid 2♣ over 1♣.

[ahydra]

What about 4C over 2C?

ahydra

[barmar]

cloa513, on 2012-March-12, 04:31, said:

Don't start that way- bid 2♣ over 1♣.

That denies a 4-card major, so you could easily miss a heart fit. 1♥ is the correct first bid.

If you bid 4♣ over 2♣, GIB will just bid 5♣.

I would probably bid Blackwood, GIB will show his one ace, and we'll play 6♣. It's a 50% slam (it just needs the ♠ finesse), so not a bad contract, but it doesn't make this time.

GIB would bid 3NT with the South hand!

[fuburules3]

barmar, on 2012-March-13, 02:37, said:

That denies a 4-card major, so you could easily miss a heart fit. 1♥ is the correct first bid.

If you bid 4♣ over 2♣, GIB will just bid 5♣.

I would probably bid Blackwood, GIB will show his one ace, and we'll play 6♣. It's a 50% slam (it just needs the ♠ finesse), so not a bad contract, but it doesn't make this time.

GIB would bid 3NT with the South hand!

If 2 diamonds is a forcing bid with diamonds, why can't 3 diamonds or 4 diamonds be a splinter?

[barmar]

fuburules3, on 2012-March-14, 19:49, said:

If 2 diamonds is a forcing bid with diamonds, why can't 3 diamonds or 4 diamonds be a splinter?

One of them probably should be. It looks like GIB's bidding database doesn't have second-round splinters in it, so it thinks all of these are natural.

[AyunuS]

I agree as you don't really need so many different natural diamonds bids that 3 or 4♦ being used as a splinter would probably be more useful.

[georgi]

This is a sequence which is about to get improvement likely in the next GIB update
1X - 1Y
2X - 2Y or 2Z