# Quantitative No Trump Bids

In natural bidding systems most notrump (NT) bids are made with balanced hands and within a narrowly defined high card point (HCP) range. In these systems, such as Acol and Standard American, NT bids are limit bids and therefore are not forcing. Bearing in mind the need to bid only to the optimum contract and no higher, bids above game are made only in specific circumstances, one of which is to alert partner to the fact that a slam may be possible and inviting partner to take part in the decision making process.

• Before looking at the detail, it is necessary to understand that bridge theory and practice suggest that the HCP method of hand evaluation, together with common sense concerning balance and cover in all suits, is the best for deciding the level of NT contracts, thus:
• 25+ HCP is sufficient for a game 3NT
• 33+ HCP should yield 12 tricks
• 37+ HCP will probably produce a grand slam
• Assuming a weak NT bidding system, for example Acol, this is how quantitative bids work:
• An opening bid of 1NT shows 12, 13 or 14 HCP.
• If responder has 21 HCP, then a small slam looks certain (21 + 12 opener's minimum = 33) and should be bid.
• If responder has 18 HCP or less, then even a small slam is not possible (18 + 14 opener's maximum = no more than 32)
• If responder has 19 or 20 HCP, then a small slam is a possibility but more information is needed about opener's hand before it should be bid. This is where a quantitative bid should be made:
• a bid of 4NT "invites" opener to bid 6NT with a maximum holding of 14 HCP (19 + 14 = 33 which is sufficient)
• to pass with a minimum 12 HCP (20+ 12 = only 32)
• with partnership agreement, to bid 5NT holding 13 HCP - asking partner to bid 6NT with 20 HCP and to pass holding 19 HCP.
• An opening bid of 2NT shows 20, 21 or 22 HCP.
• If responder has 13 HCP, then a small slam looks certain (13 + 20 opener's minimum = 33) and should be bid
• If responder has 11 or 12 HCP, then a small slam is a possibility but more information is needed about opener's hand before it should be bid. This is where a quantitative bid should be made:
• a bid of 4NT "invites" opener to bid 6NT with a maximum holding of 22 HCP (11 + 22 = 33 which is sufficient)
• to pass with a minimum 12 HCP (12+ 20 = only 32)
• with partnership agreement, to bid 5NT holding 21 HCP - asking partner to bid 6NT with 12 HCP and to pass holding 11 HCP.
• When responder is even stronger and is considering whether a small or grand slam is better (and only these two options), then the initiating bid is 5NT (not 4NT)
• Similar bids can be made using a strong no trump bidding system, for example Standard American, by adjusting the HCP count accordingly
Contract bridge articles
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Bidding
Introduction Bidding system Bridge convention Hand evaluation List of bidding systems 2/1 game forcing Acol Bidding system Blue Club Boring Club Bridge Base Basic Bridge World Standard Canapé (bridge) Carrot Club EHAA Fantunes Highly unusual method Kaplan-Sheinwold Little Major Moscito OK bridge 2/1 Polish Club Precision Club Roman Club Romex system Säffle Spade Standard American Strong club system Asptro Astro convention Baron convention Bergen raises Blackout convention Blackwood convention Brozel Byzantine Blackwood convention Cappelletti convention Carrot 1NT Carrot 4NT Comfy Canapé Copenhagen convention (bridge) CRASH convention DONT Drury convention Ekren convention Fishbein convention Fit showing jump bid Flannery Forcing notrump Fourth suit forcing Gardener 1NT Gerber convention Ghestem Grand slam force Hello convention Jacoby 2NT Jacoby transfer Kamikaze 1NT Landy Last Train Leaping Michaels Lebensohl Lightner double Lionel convention Meckwell convention Meyerson convention Michaels cuebid Mini-Roman 2 Diamond Mohan convention Muiderberg convention Multi 2 diamonds Namyats Negative double Negative free bid New minor forcing Norman four notrump Ogust convention Pass-or-correct bid Raptor convention Relay bid Rosenkranz double/redouble Rubens advances Rubensohl San Francisco convention Serious 3NT Slam-seeking conventions Snapdragon double Splinter bid Stayman convention Strong Notrump After Passing (SNAP) Strong two bid Strong two clubs Suction convention Transfer Walsh Unusual notrump Unusual vs. unusual Walsh convention Woolsey convention XY Notrump convention List of defenses to 1NT Balanced hand Balancing (bridge) Bidding box Board (bridge) Brown sticker Cue bid Five-card majors Forcing bid Forcing pass Gambling 3NT Game try Honor point count Inverted minors Law of total tricks Losing-Trick Count Major suit Minor suit Optimum contract and par contract Overcall Preempt Prepared opening bid Principle of fast arrival Psychic bid Quantitative no trump bids Reverse (bridge) Sacrifice (bridge) Shooting (bridge) Single suiter Strong pass Support double Takeout double Three suiter Two suiter Useful space principle Void (cards) Weak two bid Zar Points
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Administrators, players and writers List of bridge people List of nationality transfers in sport A Terje Aa Pierre Albarran Martin Andresen Walter Avarelli B Cezary Balicki Hermine Baron Henry Beasley Giorgio Belladonna Richard Belton Albert Benjamin Marty A. Bergen David Berkowitz Huub Bertens David Bird Easley Blackwood, Sr. Blue Team Norberto Bocchi Janet de Botton Tim Bourke Marcelo Branco Tomas Brenning Raymond Brock Jane Bronstein John Brown David Bruce Michelle Brunner Walter Buller Wesley Burrowes C Orlando Campos Mike Cappelletti Drew Casen James Cayne Gabriel Chagas Paul Chemla George Coffin Larry N. Cohen Ben Cohen Barry Crane John R. Crawford Ely Culbertson D Massimo D'Alelio Dallas Aces Hugh Darwen Mike Develin Leslie Dodds Giorgio Duboin Michel Duguet E Billy Eisenberg Maria Erhart Bob Etter F Fulvio Fantoni Martin Fleisher Jeremy Flint Pietro Forquet Tony Forrester Robert Frederick Foster Richard Freeman G Nico Gardener Benito Garozzo Piotr Gawryś Pierre Ghestem Eldad Ginossar Fred Gitelman Ramesh Gokhale Bobby Goldman Phil Gordon Fritzi Gordon Charles Goren Audrey Grant Alan C. Greenberg Susanna Gross Glenn Grøtheim Ace Gutowsky H Bob Hamman Nicolas Hammond Maurice Harrison-Gray Geir Helgemo Tor Helness Walter Herbert Marc Hodler Mark Horton Carl Hudecek Roy Hughes I J Oswald Jacoby Pierre Jaïs K Charles Kalme Edwin Kantar Edgar Kaplan Ralph Katz George S. Kaufman Norman Kay Amalya Lyle Kearse Sami Kehela Hugh Kelsey Roy Kerr Ron Klinger Martin de Knijff Putte Kock Kenneth Konstam Janusz Korwin-Mikke Michał Kwiecień L Harry Lampert Emmanuel Lasker Lorenzo Lauria Michael Lawrence Peter Lee Linda Lee James Lemon Bobby Levin Irina Levitina Clyde E. Love Paul Lukacs M Iain Macleod Zia Mahmood Ronald Mansbridge Rixi Markus Jack Marx Jeff Meckstroth Adam Meredith Marshall Miles Victor Mollo Albert Hodges Morehead Bauke Muller Eric Murray N Claudio Nunes O Jack Olsen Aileen Osofsky Géza Ottlik P Camillo Pabis Ticci Richard Pavlicek Jordanis Pavlides Leonard Pennario Carl'Alberto Perroux Hubert Phillips Gary Pomerantz Julian Pottage R Prabhakar Tony Priday Tommy Prothro Jacek Pszczoła Q R Terence Reese Doris Rhodes Andrew Robson Eric Rodwell Bill Root Eunice Rosen William Rosen Michael Rosenberg George Rosenkranz Alvin Roth Jeff Rubens Ron Rubin S Boris Schapiro Howard Schenken Peter Schneider A. J. Sefi Martin Seligman Tim Seres Omar Sharif Alfred Sheinwold Shen Chun-shan Jaggy Shivdasani S. J. Simon P. Hal Sims Helen Sobel Smith Nicola Smith Marc Smith Tobi Sokolow Paul Soloway Alan Sontag Nathan B. Spingold Samuel Stayman Paul Stern Ralph Swimer Peter Swinnerton-Dyer T Roger Trézel Dorothy Hayden Truscott Alan Truscott U V Harold Stirling Vanderbilt Alfredo Versace Bep Vriend W Louis H. Watson C. C. Wei Roy Welland Berry Westra Charles Wigoder Bobby Wolff Kit Woolsey Milton Work X Y Z Richard Zeckhauser Jack Zhao Adam Żmudziński Bridge Club Braşov Galatasaray Bridge Team Melville Bridge Club Portland Club (London) Young Chelsea Bridge Club American Bridge Association American Contract Bridge League Austrian Bridge Federation Canadian Bridge Federation English Bridge Union European Bridge League International Mind Sports Association World Bridge Federation United States Bridge Federation
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Books List of bridge books 25 Bridge Conventions You Should Know Bridge Squeezes Complete The Cardturner Contract Bridge for Beginners Edwin Kantar bibliography Master Point Press Planning the Play of a Bridge Hand Terence Reese bibliography The Official Encyclopedia of Bridge Tickets to the Devil List of bridge magazines Bridge d'Italia The Bridge World Bridge Base Basic Bridge Base Inc. OK bridge 2/1
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