Question on raising/"one chip rule"

[Brettski]

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In most cardrooms, the half-bet rule applies only to limit poker, not no-limit poker. While some cardrooms may use the half-bet rule for no-limit, most do not.

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This probably requires some clarification.

The 50% rule that we apply is used to determine what constitutes a raise and what constitutes a call. It applies to limit and no limit games alike. The rule is as follows:

A bet of less than 50% of the previous bet or raise shall only be considered a call. A bet of 50% or more of the previous bet or raise shall be considered a raise. In this instance, the player shall be required to make the bet up to the minimum raise amount.

Here's two limit examples, and two no limit examples.

* Example 1. The game is 10/20 limit holdem. On the turn (a $20 betting round) Player A bets $20. Player B throws out 5 x $5 chips. Since the extra amount ($5) on top of the called portion is less than 50% of the previous bet or raise ($20) is is deemed to be a call.

* Example 2. The game is 10/20 limit holdem. On the turn (a $20 betting round) Player A bets $20. Player B throws out 6 x $5 chips. Since the extra amount ($10) on top of the called portion is 50% or more of the previous bet or raise ($20) is is deemed to be a raise. The player will be required to make up the extra $10.

* Example 3. The game is 10/20 no limit holdem. On the turn Player A bets $20. Player B raises to $50 in total. Player C throws out 12 x $5 chips. Since the extra amount ($10) on top of the called portion is less than 50% of the previous bet or raise ($30) is is deemed to be a call.

* Example 4. The game is 10/20 no limit holdem. On the turn Player A bets $20. Player B raises to $50 in total. Player C throws out 3 x $25 chips. Since the extra amount ($25) on top of the called portion is 50% or more of the previous bet or raise ($30) is is deemed to be a raise. The player will be required to make the bet up to $80 in total.