Costly Casino Mistakes: The Keno Mix-up

Costly Casino Mistakes: The Keno Mix-up | News

If you ever read stories about casino gambling, it should be rather evident to you that casinos make their money by having an edge on every game they offer.  In rare instances, however, mistakes are made on the part of the casinos and things don't work out the way they planned. What follows is a story about one of those instances that occurred many years ago at Canadian Casino, here we have all the info.

Get a Great Welcome Bonus for Legal Online Casinos in NJ & PA!

Caesars Palace Online Casino
1
93 score
$2 500 Bonus
15x Wagering
10 No Deposit Bonus
0x Wagering
Review Play here

21+ | Must be 21+ and physically present in MI, NJ, PA and WV only. New users and first deposit only. Must register using eligible promo code. Wager $25+ to receive 2,500 Reward Credits. Max. deposit-match bonus of $2,500. Minimum wagering within 7 days required to unlock bonuses. NJ bonuses apply to slot play only. Full terms and wagering requirements at Caesars Palace Online Casino . Void where prohibited. Know When To Stop Before You Start.® Gambling Problem? MI: Call the Michigan Problem Gambling Helpline at 1-800-270-7117; NJ, WV, PA (Affiliated with Harrah's Philadelphia): If you or someone you know has a gambling problem, crisis counseling and referral services can be accessed by calling 1-800-AMBLER (1-800-426-2537) or WV: Visit 1-800-GAMBLER | Terms and conditions apply

DraftKings
2
93 score
$2 000 Bonus
10x Wagering
- Freespins
Review Play here

21+ | 21+ and physically present in MI, NJ, PA or WV. Gambling Problem? Call 1-800-GAMBLER (NJ, PA, WV) or 1-800-270-7117 for confidential help (MI), or visit www.1800gambler.net (WV). | Terms and conditions apply

Ocean Online Casino
3
94 score
$1 200 Bonus
25x Wagering
- Freespins
Review Play here

21+ | Enter Promo Code: WELCOME23. Must be in New Jersey and 21 or older. Must not be part of any exclusionary list. Bet with your head, not over it. Gambling Problem? Call 1-800-GAMBLER. | Terms and conditions apply

BetMGM
4
96 score
$1 025 Bonus
15x Wagering
- Freespins
Review Play here

21+ | 21+ years of age or older to wager. MI, NJ, PA or WV only. Excludes Michigan Disassociated Persons. All promotions are subject to qualification and eligibility requirements. Rewards issued as non-withdrawable site credit, unless otherwise provided in the applicable Terms. Please Gamble Responsibly. Gambling Problem? Call 1-800-270-7117 for confidential help (MI), 1-800-GAMBLER (NJ, PA & WV). | Terms and conditions apply

Borgata Online
5
94 score
$1 020 Bonus
1x Wagering
- Freespins
Review Play here

21+ | Must be 21+. NJ & PA Only. All promotions are subject to qualification and eligibility requirements. Rewards issued as non-withdrawable site credit, unless otherwise provided in the applicable Terms. If you or someone you know has a Gambling Problem, help is available. Call 1-800-GAMBLER. | Terms and conditions apply

PartyCasino
6
93 score
$1 000 Bonus
15x Wagering
25 Freespins
0x Wagering
Review Play here

21+ | Must be 21+. NJ Only. All promotions are subject to qualification and eligibility requirements. Rewards issued as non-withdrawable site credit, unless otherwise provided in the applicable Terms. Gambling Problem? Call 1-800-GAMBLER. | Terms and conditions apply

Golden Nugget
7
92 score
$1 000 Bonus
10x Wagering
200 Freespins
1x Wagering
Review Play here

21+ | Must be 21 or older to participate. Only available in NJ & MI. Gambling Problem? Call 1-800-GAMBLER. If you or someone you know has a gambling problem and wants help, call the Michigan Department of Health and Human Services Gambling Disorder Help-line at 1-800-270-7117. | Terms and conditions apply

bet365
8
83 score
$1 000 Bonus
20x Wagering
- Freespins
Review Play here

21+ | 21+ and physically located in NJ. Gambling problem? Call 1-800-GAMBLER. New Casino customers only. Deposit min. $10. Max. bonus $1,000. Value of deposit plus bonus must be wagered 20 times. | Terms and conditions apply

PlayLive! Casino
9
89 score
$625 Bonus
10x Wagering
25 Freespins
20x Wagering
Review Play here

21+ | 21+ and physically located in PA. New members only. Wagering Requirements and T&C’s apply. Gambling problem? Call 1-800- GAMBLER. | Terms and conditions apply

BetRivers
10
92 score
$500 Bonus
1x Wagering
- Freespins
Review Play here

21+ | Must be 21+ and present in NJ, PA, MI or WV. Void Where Prohibited. If you or someone you know has a gambling problem, call 1-800-GAMBLER (NJ, PA, WV), 1-800-270-7117 (MI), or visit www.mdgamblinghelp.org (MD) and www.1800gambler.net (WV). | Terms and conditions apply

PlayStar
11
82 score
$500 Bonus
30x Wagering
500 Freespins
30x Wagering
Review Play here

21+ | You must be over 21 and physically within the state of NJ to play at PlayStar. Full T&Cs apply. If you or someone you know has a gambling problem and wants help, call 1-800-GAMBLER. | Terms and conditions apply

RushGames
12
81 score
VC$500 Bonus
- Freespins
Review Play here

21+ | Terms and conditions apply

Bally Casino
13
88 score
$100 Bonus
0x Wagering
- Freespins
Review Play here

21+ | You must be 21 years or older and located in the state of New Jersey to play. Gambling Problem? Call 1-800-GAMBLER. | Terms and conditions apply

HarrahsCasino.com
14
75 score
$100 Bonus
10x Wagering
120 Freespins
10x Wagering
Review Play here

21+ | Must be 21 or older to gamble. Must be physically located within the state of New Jersey to participate in any CIENJ promotion. Know When to Stop Before You Start® Gambling Problem? Call 1-800-GAMBLER. | Terms and conditions apply

Wheel of Fortune Casino
15
89 score
$40 Bonus
5x Wagering
- Freespins
Review Play here

21+ | Must be 21+. NJ Only. New Customer Offer. All promotions are subject to qualification and eligibility requirements. Rewards issued as non-withdrawable site credit, unless otherwise provided in the applicable Terms. Gambling Problem? Call 1-800-GAMBLER. | Terms and conditions apply

Stake.us
16
84 score
$25 Stake Cash
250000 Gold Coins
Review Play here

21+ | Not a Real Money Casino Site. Intended for gaming entertainment. Players must be 18+ to join and play. | Terms and conditions apply

BetRivers.NET
17
93 score
10 - 1000 VC$ Bonus
- Freespins
Review Play here

21+ | Not a real money site. No gambling is involved or real money wins. Games are not intended for minors under the age of 18. | Terms and conditions apply

Pulsz
18
93 score
2.3 SCs + 5,000 GCs Bonus
- Freespins
Review Play here

21+ | There's no real money gaming offered at Pulsz.com and is intended solely for entertainment purposes. No purchase is necessary. Users must be 18 or over. | Terms and conditions apply

High 5 Casino
19
88 score
250 Game Coins
5 Sweeps
Review Play here

21+ | 600 Diamonds also available upon sign up. Not a real money site. No gambling is involved or real money wins. Games are not intended for minors under the age of 18 | Terms and conditions apply

Funrize
20
87 score
75,000 Coins Bonus
- Freespins
Review Play here

21+ | Not a real money site. Funrize is a social casino that does not provide any real money gambling. Players much be 18 years or older to join. | Terms and conditions apply

Gambino Slots
21
86 score
100,000 G-Coins Bonus
200 Freespins
Review Play here

21+ | Not a real money site. No gambling is involved or real money wins. Games are not intended for minors under the age of 18. | Terms and conditions apply

WOW Vegas
22
85 score
5000 WOW Coins Bonus
- Freespins
Review Play here

21+ | Not a real money site. No gambling is involved or real money wins. Games are not intended for minors under the age of 18. | Terms and conditions apply

by Steve Bourie  Learn more about the author read more »

Casino de Montreal first opened for business in October 1993 and one of the games it offered was keno. Keno is a lottery-type game that involves the numbers from 1 to 80. 

Twenty numbers out of the 80 are selected randomly and players try to guess which numbers will be chosen. Players can guess anywhere from 1 to 20 numbers and the more numbers they guess correctly, the higher the payoff when they win.

What's the difference between land-based casinos and online casinos in the US?
Keno Players will Love Online Casinos

2 types of Keno

The casino offered two types of keno games – mechanical and electronic. In the mechanical version the numbers were printed on 80 ping pong-type balls and were chosen by a blower system that mixed the balls and then allowed the balls to escape to a chute one-at-a-time so the numbers could be called out.

The electronic version used a computer chip called a random number generator (RNG) to determine its 20 numbers. These electronic machines had been used in numerous Las Vegas casinos for years and had always proved reliable.

Daniel Corriveau was a freelance computer consultant who enjoyed using his skills to look for patterns in winning lottery numbers. When the new casino opened in his home province of Quebec he decided to turn his attention to the casino’s keno game.

Eventually, he thought he detected a pattern in the electronic version of the game and he went to the casino on April 10, 1994 to test out his theory. By the end of the evening he had hit 19 out of 20 numbers three consecutive times, plus some other number combinations for a total win of $620,000.

Knowing that it was statistically impossible to accomplish such a feat, the casino personnel immediately shut down the electronic game and decided not to pay Courriveau until they conducted an inquiry into what had happened.  After all, they wanted to make sure that there wasn’t some elaborate scheme underway to defraud them.

After conducting a full-scale police investigation, including a polygraph exam, the casino called a press conference 17 days later to announce that Courriveau had legitimately won his bets and presented him with a check for $620,000.

So, what happened? 

Did Courriveau really discover a winning program for predicting keno numbers? Well, not exactly. It turns out that there was a problem with the electronic version of the game. 

Although a RNG can literally produce hundreds of millions of different number combinations it always has to have a starting point, or seed, to begin its calculations. 

It then uses that number to do the math to come up with a new number which then becomes the seed for the next calculation. 

It then uses that number to do the math for the next calculation and that result becomes the seed for the next calculation.

This process is repeated continuously.  The one thing to keep in mind, however, is that because the calculations are always the same the RNG needs a different seed each time or else it will come up with the same numbers. In other words, if the starting seed doesn’t change, the RNG will simply come up with the same results time after time.

As stated before, the electronic machines had a history of working fine in Las Vegas, but in Las Vegas the casinos are open 24 hours a day. In Montreal, however, the casino did not operate on a 24-hour basis and the machine was shut off at night.

When the machine was turned on the next day it always started its calculations at the initial seed which was programmed into it.  Since the seed never changed, the machine merely kept repeating the same pattern of numbers.

Courriveau was lucky enough to spot the pattern but anyone probably could have done the same had they kept a history of the winning numbers. After the problem, the casino still offered keno, but only the mechanical version. The electronic keno game never re-opened after Courriveau’s big win.

Want to Learn More? Find out about the use of RNG in legal online blackjack here!