TartanTwos

• Bridge Conventions (List)

Tartan Twos in a major show two suited hands, the bid major and a lower ranking suit (hence 2S can show hearts).

Also, the bid shows either weak two bid strength OR Acol two bid strength (16+HCP). Most partnerships play them as forcing for one round, unless partner has a very weak hand (fewer than 3 HCP).
There are various responses that show no game interest opposite the acol2, game interest opposite the weak2, and game force opposite the weak2. One version has partner

(a) raise the suit one level with no game interest opposite a strong 2 (nor interest in game opposite weak two, obviously)
(b) bid next higher suit with game interest opposite weak two, bidding 2nt if two spades was the opening bid (game forcing if strong two)
(c) bid a new suit at the three level (or 3NT) for game force opposite a weak two (slam interest if strong two)

The most important Bridge Bidding Conventions

• Walsh Relays
• Walsh Transfer System
• Mexican 2 Diamonds
• Nilsland Defense
• Tartan Two Bids
• Minor Suit Stayman - 2D response to 1NT
• Minor Suit Stayman - 2S response to 1NT
• Minor Suit Swiss
• Two Way New Minor Forcing/XY Notrump rebids
• Eastern Cue-Bid
• Western Cue-Bid
• Romex Trial Suit Bids with Power
• 2c Open

A bidding convention is an agreement between two players on a different meaning of a bid in the card game bridge. These agreements are made so that partners can more quickly determine which contract, with both their cards, they can win together. Often, conventions are forged together into one, which is then called a bidding system.

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