Standard American and Co.
Also Treatments that can be applied in most bidding systems
- Transfer responses to 1♣ showing clubs or balanced; another thread about continuations after transfer completion; more
- Transfer checkback AKA Izdebski Transfers
- Transfers after 1♦-1M, when 1♦ is always unbalanced; a more general thread on responses to unbalanced 1♦
- Riton 2♣. Some variations and interaction with Kaplan Inversion and more of the same.
- Fred Gitelman on Game Tries
- 2NT as invitational+ raise of 1♥/♠; another; another
- An overview of response structures to strong 2♣
- Transfers after 1x-1y-2NT
- Wolff Signoff after 1x-1y-2NT
- Montreal Relay, a system where 1♣-1M shows a 5-card suit and 1♣-1♦ relays for 4-card majors
- Followups to an inverted minor raise; another thread including Fred's structure
- New Minor Forcing
- Primer on reverse bidding including discussion of the Ingberman convention
- Continuations after 1♦-1♥-2♣-2♠ (fourth suit forcing)
- Impossible 2♠ (after 1♥-1NT-2m)
- 1m-1M-2M that can potentially be a 3-card raise.
- 1♥-1♠ auctions including variations of Kaplan Inversion.
- 1♥-1♠-2♦-3♣.
- Jeff's Magic Elixir: 1♠-1NT-3♣ showing 5-4 majors, 5-5 blacks or a singlesuiter.
- Fourth suit invitational (rather than the more common fourth suit forcing to game).
- Zirconia: Better bidding after 1♥-1♠.
- A motivation and writeup of Reverse Gazzilli: Part 1, Part 2, Part 3.
- A basic Gazzilli writeup. Gazzilli is a convention where a 2♣ rebid after a 1M opening shows either clubs or any strong hand. (Frederick Staelens)
- Another Transfer Walsh writeup (Paul G.)
- Comparison of Montreal Relay, NMF, Checkback, XYZ, Leong Transfers, Morgan Transfers, etc. (similar to Izdebski Transfers?) (Pete Matthews)
2/1 Game Force
- Gitelman/Kokish after forcing 1NT
- 4th suit after 2/1
- Extras or not: 1M-2♦-3♣; 1♥-2m-2♠.
- The Schuler Shift.
- Improving 2/1 Gameforce (Fred Gitelman). Includes discussion of the Serious 3NT and Last Train to Clarkesville conventions.
Weak NT systems
- Various discussions including which seats/vulnerabilities are good for weak NT and whether 1NTx should be a possible contract.
- Runouts after 1NT is doubled
- Transfer responses to 1♣ in a Weak NT context
Structures after natural 1NT/2NT openings
- Keri over 1NT
- "Revised Keri" (2004)
- Puppet Stayman over 1NT
- Continuations after Stayman with slam interest including Baze
- Muppet and Romex over 2NT
- More fun over 2NT
- Responding with weak hands with 5-4 in majors
- Hitchhiker AKA Condensed Transfers (Gerben Dirksen)
- Heeman (Frederick Staelens)
Precision
Opening bids above 2♣
- Continuations after a weak 2 opening
- Multi 2♦; another; handling interference
- 2♦ as both majors or strong
- Gambling 3NT
- Mexican 2♦ (18-19 balanced)
- Weak Two Archive (Chris Ryall)
Defensive Bidding
- Defense against Multi 2♦, another one
- Woolsey vs. 1NT: Basic responses; (1NT)-X-2♦-2M-2NT/3m and X by advancer; (1NT)-X-2♣-2♦-2♥
- Cherdano vs. 1NT AKA Modified Woolsey. Later in the thread other variations such as Meyerson are also discussed.
- Asptro vs. 1NT
- Which bids to show majors/minors vs. strong 1♣
- Range for a balancing 1NT
- Defense to 2♥ as Precision 2♦
- Defense against Polish 1♣
- Defense to 1♣(Polish)-1♦(Negative)
- Defense against Ekrens 2♦
- Considerations when doubling a weak NT
Competitive Auctions
- We open 1m, they overcall 1♥
- Transfers after double of our 1♦ opening
- Transfer advances of partner's overcall
- Negative Free Bids
- We open 1♦, they overcall 2♣
- We open 1♠, they double
- We open 1NT, they interfere, especially as to what our doubles mean
- Transfers after they overcall 2♠
- Partnership Bidding at Bridge (Book by Andrew Robson and Oliver Segal)
Exotic Bidding Systems
- EHAA, more on variants
- Strong Diamond Systems