Rule of Eleven - Rule of 11 Ever since bridge became a

New Post Public Reply Private Reply Replies (0) Message Board
dw
81
Rule of Eleven - Rule of 11

Ever since bridge became a popular game, players have been trying to come up with new ideas to improve the game. Some have succeeded and some have not succeeded very well. The bridge community is quite selective and sometimes a new idea takes a long time before becoming accepted.

This is especially true if the new idea is based on mathematics. Anyone, who can count up to 13, can play bridge. There are 13 cards in every suit and once they are played, there are no more to be played.

Here is another mathematical calculation, equation, formula. Its application becomes active, only when you are absolutely sure that the lead is the fourth down from the suit lead. Once you have ascertained this possibility, then you start counting. The principle behind the Rule of 11 is the same whether the contract is a suit contract or a No Trump contract.

This formula was devised by someone who was actually playing Whist at the time, Mr. Robert Frederick Foster in 1881, and also by Mr. E.M.F. Benecke of Oxford around the same time. Mr. Robert Frederick Foster established his reputation with his publication of the book Foster's Complete Hoyle, published in the year 1897, and a copy of which was embedded into the time capsule at the 1939 New York World's Fair.

Source - Page 168: Author Mr. E.V. Shepard, Scientific Auction Bridge: A Clear Exposition of the Game to Aid Both the Beginner and the Experienced Player, With explicit and Easy Rules for Bidding and Playing, 1913, Publisher: Harper, New York, New York, United States, and London, England, LC: 13006351

However, his Rule of Eleven was published in his writing of the Foster's Whist Manual: A Complete System of Instruction in the Game, published presumably in the year 1885, published by Brentano, of New York, New York. The source of this information is from Bibliographies of Works on Playing Cards And Gaming by Norton T. Horr, 1905, published by Longmans, Green and Co., of London, England.

The Rule of Eleven states that the player subtracts the number of the first card lead from the number 11, and then the result is the number of cards higher contained in the hands of the partner of the leader and the declarer and the dummy. This information is useful not only to the declarer, but also to the partner of the leader, who can apply the same mathematical calculation. This principle applies only to the opening lead, not to any other leads when leading to the second trick or any trick thereafter.

This information can be useful in deciding to play which card, either from the hand of the partner of the leader, or the hand of the declarer or from dummy.

Example 1:

Declarer: South
Contract: 3 No Trump
Vulnerability: None
Lead: 6 of Diamonds

Dummy
AK98
987
QJ53
J4
West
J532
K54
K1076
107
East
104
J102
82
A96532
South
Q76
AQ63
A94
KQ8
According to the Rule of Eleven, the partner of the leader subtracts 6 from 11 and the result is 5. There are 5 cards higher than the 6 of Diamonds in the hands of the dummy, declarer and the partner of the leader. Likewise, the declarer subtracts the number 6 from 11 and the result is 5 cards higher than the 6 of Diamonds in the hands of the dummy, of the declarer, and of the partner of the leader.

The partner of the leader looks at dummy and his hand, and counts 3 cards higher than the 6 of Diamonds. The partner of the leader has 1 card higher than the 6 of Diamonds. The partner of the leader is not happy about the lead.

Declarer looks at dummy and his hand, and counts 4 cards higher than the 6 of Diamonds. Declarer has 4 cards higher than the 6 of Diamonds. Declarer is happy about the lead.



Example 2:

Declarer: South
Contract: 3 No Trump
Vulnerability: None
Lead: 7 of Spades

Dummy
K52
987
KQJ53
J4
West
QJ87
K543
1076
107
East
A1093
J2
42
A9653
South
64
AQ106
A98
KQ82
Declarer sees the 7 of Spades, and assumes it is the fourth down from the longest and strongest suit. Declarer subtracts 7 from 11 and counts 4 higher cards than the 7 of Spades. Declarer counts only 1 card in his hand and dummy higher than the 7 of Spades. This spells trouble for the declarer.

The partner of the leader also assumes that the 7 of Spades is fourth down from the longest and strongest suit of his partner. East also arrives at 4 cards higher than the 7 of Spades. East can see all of these 4 cards: King of Spades in the dummy, Ace-10-9 in his own hand. If declarer calls for the King of Spades, East plays the Ace of Spades and returns a Spade. With this lead, East-West win 4 Spade tricks and the setting trick is the Ace of Clubs.

If declarer decides to play low on the first trick, East lets the 7 of Spades ride, because he knows that there is no higher Spade than the 7 of Spades in the hand of the declarer. West continues to play the 8 of Spades, and declarer plays low, as does East. There is no way that declarer will take one Spade trick. East-West set the contract by applying the Rule of Eleven.

The Rule of Eleven has a lot of merit and can be used effectively. Each partner must be attuned to recognize when it is appropriate to use it, or even to consider it. The Rule of Eleven has its most application against a No Trump contract since it is generally accepted practice that the leader plays the fourth card down from his longest and strongest suit. The Rule of Eleven can also be effectively employed against a suit contract.




Scroll down for more posts ▼

Top 10 Most Recent News Articles

Kelun-Biotech's Sacituzumab Tirumotecan Shows Promise in NSCLC

Updated Category News Views 397

Kelun-Biotech's Recent Breakthrough Grab your coffee, and let's chat about something that might just change the lung cancer treatment game: Kelun-Biotech's sacituzumab tirumotecan, or sac-TMT, showing some serious promise in a Phase III trial. With numbers that could make any investor sit up a little straighter, this study has turned heads at the European Society for...

Continue Reading
BAIC FOTON Eyes African Market with Strategic Moves

Updated Category News Views 149

Revving Up for Africa Alright, gearheads and number-crunchers, strap in. BAIC FOTON is making headlines again, and this time they’re zooming right into Africa—like they're claiming pole position on a circuit that's been ignored by many. They’re calling it a “Drive to Great!” but what does that mean for us investors who aren’t just in it for the entertainment?...

Continue Reading
RYBREVANT's Promising Results in HNSCC Treatment

Updated Category News Views 205

Impressive Outcomes for RYBREVANT FASPRO in Head and Neck Cancer Tucked away in the endless cycle of drug trials, a glimmer of hope shines through with new data on RYBREVANT FASPRO in treating head and neck squamous cell carcinoma (HNSCC). This science talk might not rattle the ticker tape directly on NYSE:JNJ, but it has all the makings of a game-changer in the oncology...

Continue Reading
Sac-TMT's Phase III Success Shifts Lung Cancer Paradigm

Updated Category News Views 606

A New Era in Lung Cancer Treatment? Sac-TMT, the novel antibody-drug conjugate (ADC), just might be shaking up the non-small cell lung cancer (NSCLC) treatment landscape, and boy, is it making waves. Just when you think you’ve seen it all, here comes sacituzumab tirumotecan (sac-TMT), offering a glimmer of hope for patients whose treatment options have dwindled after...

Continue Reading
Dr. Boonipat Inspires Future Women Surgeons at Texas Tech

Updated Category News Views 288

Sowing Surgical Seeds in Lubbock In Lubbock, Texas, something meaningful unfolded—an event the big market players would hardly blink at, but a significant step for the future of medicine. Led by Dr. Thanapoom "Mo" Boonipat, the founder of FacePlus Plastic Surgery Institute, a unique suturing workshop provided premed students at Texas Tech University hands-on experience...

Continue Reading
Gildan Activewear Faces Legal Battle Over Alleged Fraud

Updated Category News Views 196

Investor Alert: Gildan's Legal Showdown Alright, here's a twist you didn't see coming—or maybe you did if you've been tracking the ticker tapes like a hawk. Gildan Activewear Inc. (NYSE:GIL) is stuck in the kind of hot water that can scald the bottom line. The Stakes: Racing Towards December 14 Marked on your calendar, December 14, is a date of some significance if...

Continue Reading
Hims & Hers Faces FTC Heat: Investor Class Action Looms

Updated Category News Views 245

Trouble Is Brewing for Hims & Hers Investors This isn't your typical quiet stroll through the park when it comes to Hims & Hers Health, Inc. (NYSE: HIMS). We're talking about a full-blown legal showdown that's unfolding faster than you can say 'telehealth scandal.' October 25, 2026, saw the kind of announcement that makes seasoned investors' hearts skip a beat if they've...

Continue Reading
Johnson & Johnson's JNJ-6143 Shines in Prostate Cancer Study

Updated Category News Views 258

Prostate Cancer's Persistent Challenge No one in the healthcare game needs the reminder: prostate cancer is no walk in the park, especially for those grappling with advanced stages. Now picture this—you're on your sixth treatment, and the cloud is not lifting. It's a battle that never ends, with traditional therapies sometimes barely holding the line. JNJ-6143's New...

Continue Reading
Firefox Champions Privacy with Iconic Internet Campaign

Updated Category News Views 223

Rekindling the Internet’s Golden Days with Firefox There’s something almost poetic about Firefox hustling to win back its old users by launching a campaign with legendary internet icons. The backdrop? A digital landscape where privacy feels about as common as a unicorn sighting. Mozilla's pulling a major nostalgia card, and I'm here for it—sort of like how vinyl...

Continue Reading
Ivonescimab Promises New Hope for Advanced BTC Patients

Updated Category News Views 322

Shifting the Paradigm in Biliary Tract Cancer Treatment Here's the scoop from the bustling world of oncology: the trial of Ivonescimab plus chemotherapy is stirring waves among experts in advanced biliary tract cancer (BTC). Contrary to the usual drowsy mornings with coffee and market pages, this data from Hong Kong wasn't about Wall Street this time. This trial might...

Continue Reading

Top 5 Most Recently Viewed Articles

Care Synergy and RCC Medical Equipment Launch New Partnership

Updated Category News Views 320

Care Synergy and RCC Medical Equipment Form Joint Venture In an exciting development for healthcare services, Care Synergy and RCC Medical Equipment Co. have announced their plans to create a strategic joint venture aimed at improving healthcare delivery in the Colorado Front Range region. This partnership will leverage the strengths of both organizations to provide...

Continue Reading
Revitalizing China's Tourism with High-Tech Cultural Experiences

Updated Category News Views 217

Revitalizing China's Tourism Through High-Tech Cultural Experiences China's tourism industry is undergoing an exciting transformation, fueled by the innovative use of advanced technology paired with its rich cultural heritage. A remarkable example is in Chongqing Municipality, where the city's skyline has become a vibrant showcase of cultural stories, highlighted by...

Continue Reading
Intriguing Insights into United States Steel Options Trades

Updated Category News Views 111

Analyzing Unusual Options Activity in United States Steel Recently, there's been notable market activity where investors with deep pockets are taking a more bearish stance on United States Steel (X). This trend is definitely something for retail traders to pay attention to, especially when navigating the complexities of the stock market. Today's options history unveiled...

Continue Reading
Mesoblast's Operational Highlights and Financial Insights Unveiled

Updated Category News Views 185

Mesoblast Limited's Webcast for Financial Results On a recent occasion, Mesoblast Limited (NASDAQ: MESO; ASX: MSB), a pioneer in allogeneic cellular medicine for inflammatory diseases, announced a webcast to delve into their operational achievements and financial metrics for the half year concluding December 31, 2024. Details of the Webcast Event The engaging webcast is...

Continue Reading
Investors of DXC Technology Prepare for Class Action Lawsuit

Updated Category News Views 77

Investors of DXC Technology Company Take Action In recent months, investors who purchased common stock from DXC Technology Company (NYSE: DXC) have been given a significant opportunity to participate in a class action lawsuit. This situation arises from allegations of securities fraud that are said to have affected many individuals who bought shares during specific key...

Continue Reading