Backgammon's Jacoby and Crawford

Here is a couple of popular rules used in backgammon games today. Try to learn them to avoid confusion later on in your backgammon career. If you are not familiar with them, you might get into disagreements with other gambling players while playing backgammon.

Jacoby Rule

This rule says that gammons and backgammons will only take effect if the stakes had been doubled at least once during the backgammon game. Gammon happens when a gambling player wins while his opponent has borne off any points. On the other hand, backgammon occurs when a gambling player wins while the opponent has a marker or more at the bar. It would interest you to know that the gammon counts for two wins while backgammon for three.

What does this rule actually do? It entices the gambling players to double the stakes. It is why this is actually ideal for gambling players. This makes the game more challenging and the strategies even more complex. It would be harder for gambling players to determine what their opponents are actually trying to do.

Imagine, just to get your backgammons and gammons to be considered, you need to have to double the stakes at least once during the game. See, you want to win a gammon and furthermore, a backgammon because by then you will get bigger money. However, you need to double the stakes at some point, which your gambling opponent may decline your offer, so the game stops right there. If he or she decline, you will win no gammon or backgammon. In a nutshell, this rule makes the game a very tricky one.

Crawford Rule

A backgammon match may include five games in all, which means the gambling player needs to win three games to win the match. When the score is two to one or two to nothing, the gambling players may declare the next game to be the Crawford Game. This means that in the next game, none of them could double the stakes.

What is the underlying principle of this rule? It's simple. At this point in the match, it is very unfair for the leading gambling player if the opponent doubles the stakes. Why? Well he gains nothing from it, because double the stakes or not, if the leading player wins the next game, he wins the match. While in the opponents' case, the doubled stakes play a much bigger role. That is why they can declare one game as a Crawford Game, but after which, the doubling cube may again be put into action.