https://tinyurl.com/jc-bridz-kartica-ang (Convention Card Janez Cernilec)

Basic system

• 1.) 2/1 GF (Two Over One Game Force)
• 2.) RKCB3012
• 3.) Stayman
• 4.) Xfers
  
• 5.) R20
• 6.) 1NT15-17
• 7.) 2NT20-21
  
• 8.) 2♣22+
  
• 9.) W2
• 10.) Bergen
  
• 11.) Jacoby2Nt
  
• 12.) Splinter
• 13.) Inv. Minors
• 14.) Drury
  
• 15.) Landy
• 16.) Cue Bids
• 17.) LST
• 18.) Neg X
• 19.) TO X
• 20.) Supp X
• 21.) StrongXX
• 22.) Weak Jump Shifts (WJS)
• 23.) Michaels cue bid

1.) 2/1 GF (Two Over One Game Force)

• If you respond to partner’s 1♥ or 1♠ opening with a new suit at the two level, you promise enough strength for game (game forcing).
• Example:
  • 1♠ – 2♣
  • 1♥ – 2♦
• Neither partner may pass before a game contract has been reached.

No-Trump Openings

6.) 1NT 15–17

• Balanced distribution.
• 15–17 points.

7.) 2NT 20–21

• Balanced distribution.
• 20–21 points.

8.) 2♣ 22+

• The strongest opening bid.
• Usually 22+ points or a very powerful distribution.

Conventions After 1NT

3.) Stayman

• Searching for a 4-card major.
• 1NT – 2♣

4.) Transfers (Xfers)

• Transfer to a major.
• 1NT – 2♦ → partner bids 2♥
• 1NT – 2♥ → partner bids 2♠
• 1NT – 2♠ → partner bids 3♣
• 1NT – 2NT → partner bids 3♦

2.) Slam Conventions

RKCB 3014

• Roman Key Card Blackwood.
• 5 key cards (4 aces + the trump king).
• Responses:
  • 5♣ = 0 or 3
  • 5♦ = 1 or 4
  • 5♥ = 2 without the trump queen
  • 5♠ = 2 with the trump queen

9.) Weak Openings

W2 (Weak Two)

• Weak opening at the two level.
• Usually:
  • 6-card suit
  • 6–10 points

Major Suit Support Conventions

10.) Bergen Raises

• Major suit raises using artificial responses.
• Allow a more accurate description of strength.

11.) Jacoby 2NT

• Strong fit after a major suit opening.
• Example:
  • 1♠ – 2NT
• Usually shows a 4-card fit and game-going values.

12.) Splinter

• Jump in a new suit.
• Shows:
  • support for partner’s major,
  • shortness in the bid suit,
  • game-going strength.

14.) Drury

• Used after an opening bid in third or fourth seat.
• Helps determine whether the opening is sound.

Minor Suits

13.) Inv. Minors (Inverted Minors)

• After a 1♣ or 1♦ opening:
  • single raise = strong,
  • jump raise = weaker.

Defensive Conventions

15.) Landy

• Against the opponents’ 1NT opening.
• 2♣ = both majors.

16.) Cue Bids

• A cue bid shows a control (ace, king, singleton or void).
• Mainly used when investigating a slam.
• Bidding the opponent’s suit after partner and the overcaller have both bid.

Game Tries

17.) LST (Long Suit Trial Bid)

• Used after establishing a major-suit fit.
• Helps determine whether to bid game.

Example:

• 1♠ – 2♠
• 3♣

Shows extra values in ♣ and asks partner whether they have help in that suit.

Doubles

18.) Neg X (Negative Double)

• After an opponent’s overcall.
• Usually shows an unbid major.

Example:

• 1♦ – (1♠) – X

19.) TO X (Takeout Double) id=”kartica19″

• Takeout double.
• Shows support for the unbid suits.

Example:

• (1♠) – X

20.) Supp X (Support Double)

• Shows exactly 3-card support for partner’s suit.

Example:

• 1♦ – 1♥
• (1♠) – X

21.) Strong XX (Strong Redouble)

• After our penalty double.
• Redouble shows strength and a desire to penalize the opponents.

5.) R20 = Rule of 20

You may open the bidding with fewer than 12 high-card points (HCP) if the Rule of 20 is satisfied.

This is a very modern and quite complete 2/1 GF convention card, suitable for club tournaments, BBO, and most Slovenian pair events.

22.) Weak Jump Shifts (WJS)

WJS = Weak Jump Shifts (5–9 HCP, 6+ card suit)
1♥ – 2♠ = WJS → 6+ ♠, 5–9 HCP.

23. Michaels Cue Bid

Michaels Cue Bid = 5–5+, two-suited overcalls