Backgammon advance Rules
Beaver
If one player doubles, and the opponent accepts the double and decides his position is good enough, he may immediately redouble while retaining posession of the cube. This immediate redouble without giving up the cube is called a beaver.
Note: Playing beavers is optional, so you should agree with your opponent beforehand whether or not you are playing this rule.
Racoon
An immediate redouble by the player who just accepted a beaver.
The crawford rule
A standard rule of match play. After either player comes within one point of winning the match, the following game is played without a doubling cube. This one game without doubling is called the Crawford Game. After the Crawford game, the doubling cube is back in play again.
called after John R. Crawford.
The Jacoby rule
A rule popular in money play which says that gammons and backgammons count only as a single game if The doubling cube had not been used during the game. The rule speeds up play by eliminating situations where a player avoids doubling so he can play on for a gammon.
Called after Oswald Jacoby.
The California rule
An optional rule that says the winner of the opening roll has the option of rerolling both dice if he also turns the cube to 2. The cube still remains in the center afterward.
The Holland rule
An optional rule in match play that was popular in the 1980's but is now rarely used. After the Crawford game a player may not double until at least two rolls have been played by each side.
called after Tim Holland.
Staine's Rule
An optional rule where rolls of doubles are played with no spacial exceptions.
Touch Move Rule
The rule requires that once you touch a checker you must move that checker, and once you remove your hand from a properly played checker, that checker must remain where it was played.
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