Variations

 Duodecagammon

 From: David Moeser Address: erasmus39@yahoo.com Date: 19 December 2000 Subject: BG with one die (was: Mary's tie-die rev) Forum: rec.games.backgammon Google: Pine.GSO.3.96.1001219212759.12866C-100000@shell1

Here's my version of backgammon with one die.

DUODECAGAMMON
=============

Duodecagammon is backgammon played with one duodecahedronic die
instead of two cubic dice.  This duodecahedron-shaped die has twelve
faces, all regular pentagons, numbered 1 to 12.  For whatever number
is rolled, the player may choose any combination of two numbers from
one to six that add up to that number.  This allows the player more
choice than in regular backgammon.

Some numbers allow two combinations: 12, 10, 5, 4, 3.  Numbers in
the middle range allow three combos: 9, 8, 7, 6.  The numbers 11, 2,
and 1 are, as the English would say, hard cheese.

"Doubles," as in regular backgammon, aren't allowed.  That is,
playing one number four times (in actuality, a quadruple) isn't
allowed.  Instead, "triples" are allowed; in a triple all components
are the same.  Thus 3 can be 1+1+1, 6 can be 2+2+2, 9 can be 3+3+3,
and 12 can be 4+4+4.

The complete list of allowable "dice rolls" is as follows:

NUMBER OF
ROLL   COMBOS     POSSIBLE COMBINATIONS
====  =========   =====================
12       2       6+6, 4+4+4
11       1       6+5
10       2       6+4, 5+5
9       3       6+3, 5+4, 3+3+3
8       3       6+2, 5+3, 4+4
7       3       6+1, 5+2, 4+3
6       3       5+1, 4+2, 2+2+2
5       2       4+1, 3+2
4       2       3+1, 2+2
3       2       2+1, 1+1+1
2       1       1+1
1       1       1 alone

Neither zero nor numbers larger than six can be used.  (Why?
Because they're not on regular cubic dice.  The only number
combinations allowed are those that could be rolled with regular
dice.)

Since all triples are in the 1 to 4 range, this system eliminates
the "big doubles" phenomenon (such as double sixes or fives) and cuts
down on the "medium doubles."

Duodecagammon was invented by David Moeser of Cincinnati, Ohio, on
April 18, 1999.  Note: 12-sided dice can be found in gaming stores in
all major cities.  (And this note for flamers: "dodecahedron" is the
more commonly-found form of the word.  I know that but chose not to
use it.)

(Revision 2.0 = July 2000.  This text Copyright (c) 2000 by David
Moeser.)

>>>----------------------------------------------<<<
>>>  david moeser -- erasmus39 at yahoo dot com  <<<
>>>            Censornati, Ohio - USA            <<<
>>>----------------------------------------------<<<
* I'm sure it's clearly explained in the Zmodem DOCs *

### Variations

Acey-deucy  (J. Nagel, Dec 2004)
Acey-deucy  (Steve Ewert, June 1998)
Acey-deucy  (Lee+, Jan 1997)
Acey-deucy  (John David Galt+, Dec 1995)
Acey-deucy  (James Eibisch, Apr 1995)
Backwards play  (Colin Bell+, Feb 1996)
Best-of-n variant of match play  (Tim Chow+, Feb 2009)
Bluff Cube  (Timothy Chow+, Dec 2012)
BluffGammon  (Christian Munk-Christensen, June 2009)
Cancelgammon  (Ilia Guzei+, Mar 2004)
Domino backgammon  (Laury Chizlett, Sept 1999)
Duodecagammon  (David Moeser, Dec 2000)
Duplicate backgammon  (Dean Gay+, Jan 1997)
Duplicate backgammon  (Albert Steg, Feb 1996)
Exact bearoff  (Chris Moellering+, Dec 2002)
Fevga  (George, Sept 2004)
Fevga (or Moultezim)  (Igor Sheyn+, May 1995)
Freeze-out match  (Dave Brotherton, July 1998)
Gabgammon  (jckz, Oct 2005)
Greek backgammon  (Alexandre Charitopoulos, Aug 2003)
Greek backgammon  (Alexandros Chatzipetros, June 1997)
Greek backgammon  (Marc Jacobs+, Feb 1994)
Hit man  (Matt Reklaitis, Jan 2004)
Hyper backgammon  (Gregg Cattanach+, Dec 2000)
Hyper backgammon  (Michael A Urban, Oct 1993)
International backgammon  (Bob Lancaster+, Oct 2002)
Jacquet  (Mark Driver, June 2001)
Joker cube  (Joe Russell+, May 2011)
Khachapuri  (Michael Petch+, Sept 2010)
Kleinman's tandem backgammon  (Fabrice Liardet+, May 2010)
LongRun  (Bill Hickey, Mar 2010)
Longgammon  (Michael Strato, Dec 2000)
Low number first, fixed dice, others.  (Walter Trice, Jan 1997)
Mexican  (Tom Henry, Apr 1997)
Middle Eastern backgammon  (Alan Cairns, Mar 2002)
Misere (backgammon to lose)  (Jason Lee+, July 2004)
Misere (backgammon to lose)  (Jason Lee+, Apr 1995)
Misere, Chase, Skewed dice  (Stein Kulseth, Jan 1997)
Nackgammon  (Ken Arnold, July 1996)
Nackgammon Shuffle  (Stick, Sept 2011)
Nackgammon opening moves  (Warwick+, Feb 2002)
Narde  (narde, Nov 2006)
Nardi  (KL Gerber+, Nov 2002)
No hit  (RedTop+, May 2004)
Nuclear backgammon  (Walt Swan, Apr 1997)
Old English  (Nick Wedd+, Feb 1996)
One roll lookahead  (Stephen Turner, Mar 1997)
Opening slot rule  (Gregg Cattanach, June 2006)
Other variations  (Douglas Zare, Feb 2000)
Plakoto  (Ed Dengler+, May 1995)
Plakoto  (Pasteel M., Feb 1994)
Plakoto express  (Athansios Vagias, Feb 2005)
Portes  (George, Sept 2004)
Roll-over  (Edward D. Collins, Oct 1997)
Russian backgammon  (Daavid Turnbull, Aug 1991)
SassanGammon  (Chiva Tafazzoli+, June 2009)
Shesh Besh  (G.S., May 2003)
Simborg Rule  (Scott+, Feb 2005)
Slot backgammon  (Fabrice Liardet+, Aug 2008)
Sudden death, Woodpecker, Gerhardsen  (Fredrik Dahl, Jan 1997)
Tablestakes betting  (TrueMoneygames, June 2002)
Takhteh  (Bruce Scott+, Mar 2003)
Tandem Backgammon  (Mislav Kovacic, Feb 2012)
Tavla  (Arda Findikoglu, Nov 2004)
Tavla  (ucc02cx+, Feb 1997)
Tavli (Portes, Plakoto, and Fevga)  (Jens Larsen, July 1997)
Tavli question  (Brus+, Apr 2011)
Tracy turn around  (Michael J. Zehr, Feb 1996)
Tri-gammon  (Gregg Cattanach, Sept 2000)
Trictrac  (David Levy+, May 1998)
Trigammon  (James Eibisch, Jan 1997)