For example, a game called "one to five limit" allows each bet to be anywhere from $1 to $5 (subject to other betting rules). These limits are typically larger in later rounds of multi-round games. For example, a game might be "one to five, ten on the end", meaning that early betting rounds allow bets of $1 to $5, and the last betting round allows bets of $1 to $10.
Pot limit
A game played with a pot limit betting structure allows any player to raise up to an amount equal to the size of the whole pot before the raise.
For example, let's assume that there is $10 in the pot at the start of a betting round. The first player may open the betting for up to $10. If he does in fact open for $10, the next player may raise to $40 (after calling the $10 bet, the total amount of the pot is $30, so he may raise $30).
No limit
A game played with a no limit betting structure allows each player to raise any amount of his stake at any time (subject to the table stakes rules and any other rules about raising).
Table stakes rules
All casinos and many home games play poker by what are called table stakes rules, which state that each player starts each deal with a certain stake, and plays that deal with that stake. He may not remove money from the table or add money from his pocket during the play of a hand. Nor is a player allowed to hide the amount of his stake from other players; he must disclose the amount when asked. This requires some special rules to handle the case when a player is faced with a bet that he cannot call with his available stake.
"All in"
When a player is faced with a current bet amount that he has insufficient remaining stake to call and he wishes to call (he may of course fold without the need of special rules), he bets the remainder of his stake and declares himself all in. He may now hold onto his cards for the remainder of the deal as if he had called every bet, but he may not win any more money from any player above the amount of his bet.
For example, let's assume that the first player in a betting round opens for $20, and the next player to bet has only $5 remaining of his stake. He bets the $5, declaring himself all in, and holds onto his cards. The next player in turn still has the $20 bet facing him, and if he can cover it he must call $20 or fold. If he calls $20, thus ending the betting round, instead of collecting all bets into the central pot as usual, the following procedure is applied: since there is an all in player with only $5 bet, his $5, and $5 from each of the other players, is collected into the central pot (now called the main pot), as if the final bet had been only $5. This main pot (which may include any antes or bets from previous rounds) is the most the all in player is eligible to win. The remaining money from the still-active bettors, in this case $15 apiece, is collected into a side pot that only the players who contributed to it are eligible to win. If there are further betting rounds, all bets are placed into the side pot while the all in player continues to hold his cards but does not participate in further betting. Upon the showdown, the players eligible for the side pot—and only those players—reveal their hands, and the winner among them takes the side pot, regardless of what the all in player holds (indeed, before he even shows). After the side pot is awarded, the all in player then shows his hand, and if it is superior to all others shown, he wins the main pot (otherwise he loses as usual).
There is a strategic advantage to being all in: you cannot be bluffed, because you are entitled to hold your cards and see the showdown without risking any more money. The players who continue
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