To reduce the duration of a meeting and strengthen the strategic side ofthe game, doubling cube can be used. It called the cube or cube is a six-sideddie marked with the numbers 2, 4, 8, 16, 32 and 64. At the beginning of the party, displaying the cube 64 is placed on the shelf - in the middle of the baror one of the sides, the cube is then said to focus on one. When the cube iscentered, turn to play and before you roll the dice, a casino player may proposedoubling the stakes. His opponent then has two possibilities: either he accepts- he is - or he abandons the running game. If it takes, the cube, displaying 2 is moved from its side of the tray. From that moment, the possibility of doubling again belongs exclusively.
The multiplier applied and rarely exceeds the value of 4, but there is theoretically no limit. Although 64 is the highest ratio displayed on the cube,you can mount to 128, 256 and even more. When backgammon is played for money, aplayer is often allowed to step immediately and store the cube when hisopponent offers to double the previous issue - the process that multiplies the previous issue by 4 instead of 2 is called Beaver (beaver in English)
Avariant of the beaver is the raccoon (raccoon). A player in turn proposes to double his opponent accepts is done beaver immediately doubling the originaltwo player again immediately and let the cube to his opponent. At the same time result in the previous issue is multiplied by 8 if it is accepted by the person who made a beaver. Thissystem significantly increases the risks related to demand a doubling of the stakes.
Differentrules: RuleMurphy
Some players opt for the application of the "rule of Murphy - the automatic double rule. If both players at the beginning of the game bring the same value of the dice, the cube is positioned at the center but said each pairand brought the double value of the previous (or 2 for the first pair, 4 forthe possible next and so on). Butthe rule requiring players to agree in advance the maximum number of successive automatic double accepted. The rule of Murphy is not a formal rule of backgammon, and is rarely, if ever, used in official tournaments.
JacobyRule
A rule prepared by Oswald Jacoby can not count the Gammons and backgammon respectively double and triple - which is the traditional rule -that if the cube has left the center. This encourages a player, having toadvance to the mark, to propose doubling cube to finish a meeting when it isnot more than 2 or 3 points, so that without the Jacoby rule, it could simplytry a gammon or backgammon. The Jacoby rule is widely used in parts for the money but not in the meetings.
Ruleof Crawford
The Crawford rule, invented by John Crawford and commonly used intournaments, is to make the game fairer for the player who leads it prohibitsuse of the cube when a player is to gain a point of meeting. This partwithout the doubling cube is called "the part of Crawford." This was completed without any player has won the encounter, the following parts are played again with the doubling cube.
Indeed, if a player is to gain a point of the match, his opponent willtend to ask twice as early as possible in the current game to try to catch up.The party reported a point or two behind the player will absolutely have to winto continue the meeting.
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