A progressive jackpot is a jackpot highest payoff for a gaming machine usually a slot machine or video poker machine where the value of the jackpot increases a small amount for every game played. Normally multiple machines are linked together to form one large progressive jackpot that grows more quickly because multiple players are contributing to the jackpot at the same time. The amount of the jackpot is shown on a meter as a money value. Usually the jackpot can only be won by winning the combination with the highest payoff, e.g. a royal flush at a video poker game, or five of the most valuable symbols lemons, cherries, alligators, etc on a slot machine. Once a player wins the jackpot, the jackpot resets to a preset minimum level. The amount on the jackpot progresses increases a small amount for every play on a connected machine. The amount that the jackpot advances by is set by the casino the house. For example, on a machine whose house edge is 5%, a generous jackpot contribution might be 1% one fifth of the expected profit. The house is prepared to contribute some of the profit of a jackpot linked machine because players are attracted by the: Relative novelty of progressive jackpots generally, only a small fraction of the house's gaming machines will be connected to a progressive jackpot Constantly changing meter, often displayed on large LED or LCD displays Large amount of the jackpot, which eventually motivates more players to play the game Usually only players who wager the maximum number of credits per play qualify to win the jackpot. All wagers, whether or not they are maximum credit bets, contribute to the jackpot though. As a result, a game which requires a 10 credit wager to qualify for the progressive jackpot will tend to have the progressive jackpot rise to higher levels relative to its break-even level than a game that requires only a 5 credit wager to qualify. In some games such as video poker, it is possible to compute an optimal playing strategy based on the frequency for each payoff versus the odds of hitting that payoff. Since the jackpot of a progressive video poker game is constantly growing, it eventually can reach a break-even point where the machine becomes a positive expectation bet for the player. When the progressive jackpot is less than the break-even point, there is a negative expected value house edge for all players. In the long run, with optimal strategy, a video poker player can make a profit, although the long run is generally longer than most people think. Several tens of thousands of plays. It is worthwhile to note that a break-even point cannot be easily calculated on a slot machine game, because the payback percentage for the game is normally unknown to the player. The break-even point in video poker can be calculated because the payback percentage for the game is a function of the paybacks and odds of the poker hands, which is based on a standard 52 card deck. The return of a slot machine is based on the published paytable, but also on the normally unpublished reels. For a five reel slot machine, the player would need to know each symbol on each of the slot machine's five reels, in order to calculate the odds. For a three reel slot, the reels are normally weighted, and this would not be possible. However, in some circumstances the manufacturer may publish the payout of their machines.

Chicago Poker Card Game

The poker-related card game called Chicago is one of the most popular card games in Sweden today. Relying on the keeping of score instead of the placing of bets, it is suitable even for environments such as schools, where gambling is often prohibited. The game exists in countless versions, so here a somewhat arbitrarily chosen basic game will be followed by a number of possible variations.

Hand scores

The backbone of the game is that each poker hand has its own point value, as given in this table:

One pair - 1 point.
Two pair - 2 points.
Three of a kind - 3 points.
Straight - 4 points.
Flush - 5 points.
Full House - 6 points.
Four of a kind - 7 points
Straight flush - 8 points

Basic rules

Chicago is played with a standard 52-card deck. Each player is dealt five cards. The objective is to reach 52 points.
Exchanges and hand scoring

The players are allowed to exchange any number of their cards. If a player chooses to exchange one card only, he may choose "one up", meaning that he is dealt one card faced up, which he can either accept, or instead take the next card unseen. After the exchanges, the player with the best hand and only one player gets points for his hand. Then follows another round of exchanges, but no hand scoring.

Now, the first player begins by playing one card. Ordinary whist rules apply, but the players keep their cards collected by themselves. The player who wins the last trick gets 5 points. Also, the player with the best hand whether it is the same player or not gets points for his hand. Please Note: After achieving 42 points a player is no longer permitted to trade cards as they normally would. Instead, they are dealt 6 cards at the beginning of the game and must discard one before the first scoring round. No further exchanges are permitted.
Chicago

After the second exchange, any player can choose to play Chicago. In this case, he pledges himself to win all the tricks of the game. If he does, he is awarded 15 points, but if he fails, the penalty is just as harsh: -15 points.
Blind Chicago

Sometimes, a player given five cards below ten either inclusive or exclusive - must be decides before game starts is allowed to replace them before the exchanges begin.
Some play with 3 exchanges instead of 2. Then of course, scoring for hands will be made after both the first and the second exchange.
Some do not use the "one up" rule.
Often, a game will require that a player declare "Chicago" before they can win the game. The declaration is accepted regardless of whether one wins or loses the 5 tricks.
Often, one wants to give higher rewards than 7 or 8 points for four of a kind and Straight flush respectively. There are several ways to achieve this, most notably by elevating the player immediately to 52 points, or lowering either all players or one player of the holder's choice to 0 points, or a combination of these. Some also separate the Royal Flush from the Straight Flush, awarding 9 points for a Royal Flush. Holding a Royal flush usually means immediate victory.
The confusion is great as to what scores are appointed in the case of Chicago. Some will argue that no player will get any points at all besides the +15 or -15, whilst others will allow other points to be awarded. The +5 for the game, however, can never be stacked with the +15 for Chicago. Yet another variation is to award +13/-13 points for Chicago and the declaring player gets to go first. In that variation it is forbidden to declare Chicago unless the player has reached 13 points, ruling out the possibility of a negative score.
Some prescribe that any player with 45 points or more is not allowed to replace any cards.
Some require that after and not in the same hand as a player reaches 52 points, he must win the game once more before he actually wins. This handles the possibility that more than one player reach 52 points in the same hand.
Some award 10 points instead of 5 if the last trick is taken with a deuce. If this variant is employed, 30 points must also be awarded for a Chicago hand successfully ended with a deuce.