[benlessard]

Im trying to find 4 cards transfers ideas on the web and so far i didnt find too much.

Any ideas ?

[Free]

These are the 2 I know of:
- Heeman
- Scandinavian (or Scanian, I'm not sure) NT structure

I'd suggest googling

[blahonga]

There's a version of the Scanian NT system in Zebra on Dan Neill's website.

[gnasher]

There's a link to Heeman from Free's blog (thanks, Free).

The second method mentioned by Free is described in the booklet "Notrump bidding - the Scanian Way".

A long time ago there was an article in IPBM by Brian Callaghan about Trappit, another system of 4-card transfers. I don't think that's available anywhere on the web.

Talking of Heeman, it uses:
  1NT-2H as 5+ spades to play, or 4 spades invitational+
and
  1NT-2C;2D-2H as 5+ spades invitational+
(and similarly for hearts)

I can't see any reason to do that rather than play
  1NT-2H as 5+ spades any strength
and
  1NT-2C;2D-2H as 4 spades invitational+

I think that the latter approach makes life simpler if they intervene over the direct transfer.

[Free]

gnasher, on Sep 24 2009, 12:53 PM, said:

Talking of Heeman, it uses:
  1NT-2H as 5+ spades to play, or 4 spades invitational+
and
  1NT-2C;2D-2H as 5+ spades invitational+
(and similarly for hearts)

I can't see any reason to do that rather than play
  1NT-2H as 5+ spades any strength
and
  1NT-2C;2D-2H as 4 spades invitational+

I think that the latter approach makes life simpler if they intervene over the direct transfer.

I think it's because of simplicity and symmetry in the structure, which makes it very easy to remember.

[helene_t]

With Heeman you can stop in 2♠ if responder has an invitational hand with 5+ spades. And you even get opener to declare in those cases.

[Free]

helene_t, on Sep 24 2009, 04:32 PM, said:

With Heeman you can stop in 2♠ if responder has an invitational hand with 5+ spades. And you even get opener to declare in those cases.

Actually you can't! 2♥ is a puppet to 2♠ and opener isn't supposed to do anything else, even with maximum and fit! Ofcourse it's an obvious modification

[benlessard]

Im mostly looking for systems where 2NT after a transfer is forcing to help make the difference between long M+m or 4M+long m.

[the hog]

benlessard, on Sep 25 2009, 09:14 AM, said:

Im mostly looking for systems where 2NT after a transfer is forcing to help make the difference between long M+m or 4M+long m.

I assume you have looked at Keri? A transfer followed by 2NT is GF and shows a 4 card minor.

[ucrman]

Here is a summary of what I like to play over our 1NT opening.

After bidding Stayman 2C, I use rebid of 2NT to show Cs and a rebid of 3C to show Ds. Rebids after the 2NT and 3C bids show short suits, forcing.

Also I use the 2D transfer to show 4 or 5 Hs invitational or 4-4 in the majors, and the 2H transfer to show 4 Ss invitational. 2S asks whether min or max.

I have the complete system in Word. The summary is below. I divided it into weak hands, invitational hands, game-forcing hands, and slam hands.

WEAK HANDS

one-suiters
bid 2D to transfer to 2H
bid 2H to transfer to 2S
bid 2NT to transfer to 3C
bid 2NT to play 3D

two suiters
both majors - bid 2C followed by 2H (with longer Ss, may instead bid 2H to transfer to 2S)
both minors - bid 2S and bid the lower 5-card minor
major, longer minor - bid 2C and transfer to the minor unless major fit (2NT transfers to 3C and 3C transfers to 3D)

INVITATIONAL HANDS

one-suiters
with 4 Hs or 5 Hs, bid 2D followed by 2S
with 4 Ss bid 2H followed by 2NT
with 5 Ss bid 2C followed by 2S
with a 6+ major, transfer (2D/2H) and raise to 3H/3S
with a 6+ minor, bid 3m

two suiters
with 4-4 in the majors bid 2D followed by 2NT
with 5-5 in the majors bid 2C followed by 3D if no fit is found
with 5 Ss and another 4+-card suit, bid 2C followed by 2S
with 5 Hs and 4 Ss, bid 2H followed by 3H
with 5-4 or 4-5 in the minors bid 2S. Then after 2NT bid 3C or 3D, or after 3C or 3D, bid 3NT with 2-2 in the majors or bid 3H/3S which shows 3 cards in the other major and a singleton in the major.
with 5-5 in the minors, bid 3H or with 3 cards in a major, bid 2S followed by bidding the void (3H/3S)
with 4 Hs and a longer minor, bid 2C and signoff in the minor (2NT or 3C) if no heart fit is found, or bid 2D followed by 2S
with 4 Ss and a longer minor, bid 2C and signoff in the minor (2NT or 3C) if no spade fit is found, or bid 2H followed by 2NT

GAME FORCING HANDS


with 4 Hs or 4 Ss with a singleton/void in the other major, bid 2NT followed by 3 in the short major
with 4 Hs, bid 2C followed by 3NT
with 4 Ss, bid 2C followed by 3D over a 2H response or by 3NT over a 2D response

one-suiters
with 5 Hs or 5 Ss, transfer to the major (2D/2H) and then bid 3NT with a somewhat balanced hand
with 6+ Hs or 6+ Ss, bid 4D or 4H
with 6+ Cs, bid 2C followed by 2NT, etc
with 6+ Ds, bid 2C followed by 3C, etc.

two suiters
with 4 Hs and 4 Ss, bid 2C followed by 3NT if no fit is found
with 5 Hs and 5 Ss, bid 2C followed by 3D if an immediate fit is not found
with 5-4 or 4-5 in the majors, bid 2C followed by 3 of the 4-card suit if no immediate fit is found
with 4-6 in the majors, bid 2C and over a 2D response bid 4M.
with 4 Hs or 4 Ss with a longer minor, bid 2C, etc.
with 5 Hs or 5 Ss and a 4- or 5-card minor, bid 2D/2H followed by 3C/3D
with 5-4 or 4-5 in the minors, bid 2S followed by 3 of the singleton major with 3-1-5-4 or 3-1-4-5, or bid 2NT followed by 3NT with 2-2-5-4
with 5-5 in the minors, bid 3H or 3S, or with 3 cards in a major, bid 2S followed by bidding the void (3H/3S)
with 5 Hs/Ss and 6 Cs/Ds, bid 2C followed by a transfer to the minor (2NT/3C), followed by 4H/4S

SLAM INVITATIONAL HANDS

one-suiters
with 4 Hs or 4 Ss, bid 2C and if a fit is found bid 4D, if no fit is found bid 4NT
with 5 Hs or 5 Ss, bid 2D/2H and then bid 4NT with a somewhat balanced hand
with 6 Hs or 6 Ss, bid 2D/2H, and then bid 4Ms with no singleton or void or jump to the singleton or void
with 6 Cs or 6 Ds, bid 2C, then transfer to the minor (2NT = Cs, 3C = Ds), then bid appropriately
with a flat hand bid 4NT (bid slam unless very minimum) or else bid 2S and bid 6NT over a 3m response

two suiters
with 4-4 in the majors, bid 2C and if a fit is found bid 4D, if no fit is found bid 4NT
with 5-4 in the majors, bid 2C followed by 3 of the 4-card suit if no immediate fit is found
with 5 Hs and 5 Ss, bid 2C followed by 4m (singleton/void) over 2D or followed by 3Mo over 2H/2S
with 5 Hs or 5 Ss and a 4- or 5-card minor, bid 2D/2H followed by 3C/3D
with 5-4 or 4-5 in the minors, bid 2S followed by 3 of the singleton major with 3-1-5-4, or bid 2NT followed by 4NT with 2-2-5-4