Heidar

To a 1♦ opening I like to bid 1M (majors over minors even with longer minor) if limited to invitational values. Therefor I bypass Majors for GF hands when I got longer clubs. With that in mind I really hate it when partner bids 2NT and it does not deny a Major... So all 2M bids by opener are only to show shape and finding fit, nothing about min/max. 2♦ rebid by opener does NOT deny a 4card Major, it just shows 5+♦. 2M by opener does deny longer ♦'s though. Min/max aint of much use to you unless you got established fit. So hold those bids til over 3rd lvl :D 3NT serious/frivolous ans LTTC for example. To answer your questions: Playing BBO 2/1 w/o interference, the same question. 2/1 or SAYC I say 2H does not show extra str, just shape. 3C in sayc is still non-forcing. Although I would not bet on everyone else playing it that way on BBO. Playing BBO 2/1 with interference, the same question. I assume your interference means dbl or ♠overcall. Both times the 2♣ bid by responder promises only 8+ and has a tendancy to deny hearts, unless he's planning on a revers himself. 2H by responder shows therefor extra (bidding suit pd is known NOT to have usually means extra :))

Gonna suggest a widely known convention used in Iceland but I haven't been able to find it anywhere else. It's not the same as NMF or Checkback, reversed or whatnot. 1x - 1x 1NT does not deny 4-card M followups: 1x - 1x 1NT - 2C = puppet to 2D to signoff in 2D or 3C, or otherwise show various weak/invitational hands with at least 1 4-card major - 2D = Artificial GF, opener starts bidding cheapest 4-card suit - 2M = 4-6 invitational value (limiting the 2C relay to 4-5) - 3C = 2 suiter, inv The name we use for this convention is called Tvíhleypan (doubble-barreled gun).

1♥ – 2NT |--- 3♣ = Minimum hands | |--- 3♦ = Relay | | |--- 3♥/♠/NT = Short, using steps (♣,♦ and other major) | | | |--- 3♠ = Cue after a 1♥ opening, "Real" after a 1♠ opening | | | |--- 3NT = Real, can be used as a ♠ cue after a 3♠ answer over 1♥ opening | | | | | |--- Cue, no shortness (4♥ = ♠ cue after a 1♥ opening) | | | |--- 3/4♥ = To play (taken from a 2NT limit+ convention as you can see :P) | |--- 3♦ = Maximum hand without shortness | | |--- 3♥/♠/NT = Gives responder a chance to show singletons so opener can better evaluate his balanced hand and avoid open suits (♣,♦ and other major) | |--- 3♥/♠/NT = Maximum hand, short, using steps (♣,♦ and other major) | |--- Continue as shown above after 3♣ - 3♦ relay | |--- 4♣/♦ = Two suiters (4♥ shows ♥-♠ two suiter with longer ♥ ) Real mentioned above (as in the convention "real 3NT") = Serious slam interest