Glasnevin Bridge Club

Brief Summary of the System
Weak (12-14) 1NT
Five Card Majors
Short (non-forcing) Club
Two level openings:
  • 2C Unconditional Game Force (25+ balanced or 9+ playing tricks)
  • Multi 2D (Weak 2 Major, Acol 2 Minor, 23-24 NT)
  • 2H/2S Muiderberg
Three level openings:
  • 3C/3D/3H/3S pre-emptive
  • 3NT Gambling
Four level openings:
  • 4C/4D Namyats
  • 4H/4S pre-emptive
  • 4NT Acol
Five level openings:
  • 5C/5D pre-emptive

System after 1NT Openings
  • 2C: Stayman (Non-Promissory and could be Garbage)
  • 2H/2S: Transfers (with bouncing & breaking)
  • 2S: Transfer to clubs
  • 2NT: Transfer to diamonds
  • 3C/3D/3H/3S: Slam Tries
  • 4C: 6/5 in the majors
  • 4NT/5NT: Quantatitive
Effect of Interruptions
  • Penalty Double: Helvic
  • Overcall: Rubensohl

System after 2NT Openings & 2D/2x/2NT & 2C/2D/2NT Sequences
  • 3C: Puppet Stayman
  • 3D/3H: Transfers
  • 3S: Minor Suit Stayman
  • 4C/4D/4H.4S: Slam Tries
  • 4NT/5NT: Quantatitive
Reverse into 1NT: 15-17
Reverse into 2NT: 18-19

Major Opening Treatments
  • Single raise weak
  • Double raise limit
  • Game raise preemptive
  • Delayed game raise strong with secondary support
  • Jacoby 2NT
Effect of Interruption
  • Jacoby 2NT off, 2NT becomes balabced 10-12
  • Cue bid now shows limit raise of better, double raise becomes pre-emptive

Minor Opening Treatments
  • Inverted raises
  • Interruption switches off inverted raises, raises revert to natural meaning

Other related conventions
  • Weak jump-shifts
  • Help suit trial bids over majors

Slam Bidding
  • Splinters
  • Italian style control showing cue bids
  • RKCB (0314)
  • DOPI
  • Redwood
  • Voidwood
  • Acol 4NT

Competative Bidding
  • Takeout doubles
  • Responsive doubles
  • Reopening doubles
  • Negative doubles
  • Competative doubles
  • Simple overcalls with pre-emptive style responses plus unassuming cue bid
  • Weak jump-overcalls
  • Pre-emptive overcalls
  • Michaels & Unusual 2NT

Conventions used in defence
  • Multi-Landy over 1NT
  • Lebensohl, Leaping Michaels & Western cue bids over weak 2s
  • Prepared systems over Multi 2D & Strong Club openings

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