should raise after 1s-2h as default with 3 cd support

[Stephen Tu]

[hv=sn=stephtu&s=SKTHJT764DAQ85CA4&wn=Robot&w=S9643HKDT963CJ963&nn=Robot&n=SA8752HA85DK4CQ82&en=Robot&e=SQJHQ932DJ72CKT75&d=n&v=n&b=21&a=1S(Major suit opening -- 5+ S%3B 11-21 HCP%3B 12-22 total points)P2H(Forcing two over one -- 5+ H%3B 13+ total)P2S(Opener rebids suit -- 5+ S%3B 11-21 HCP%3B 12-22 total points%3B forcing to 3N)P4S(5+ H%3B 3+ S%3B 13-15 total points)PPP]400|300[/hv]

 

Is there a reason North doesn't make the normal 3h raise?

 

(I know 4s is a misbid, this was a robot reward race and I was rushing to save time).

[pigpenz]

another one of those weird things that GIB does

spades only promises five forcing to 3NT no reason not to give chance to get to right strain

[Stephen Tu]

I know spades promises only 5, but it should also deny 3 cd hearts.

[barmar]

Because of fast arrival, 3♥ shows either extra values (15+ total points) or at least 4-card support. 4♥ shows a minimum opening, but also denies controls or shortness in the minors. This hand falls in between: it's not good enough for 3♥, but the ♦ control precludes 4♥. So it makes the temporizing 2♠ bid.

 

If you continue bidding out your shape by bidding 3♦, GIB will then jump to 4♥.

[Stephen Tu]

Weird. GIB has melded its own weird combination of picture bids, and playing 3h as "fast arrival inference" even though 4h isn't fast arrival. That's a bit bizarro. I suppose it might be playable. Non-std though.