Variations

 Tandem Backgammon

 From: Mislav Kovacic Address: kovacic.mislav@gmail.com Date: 9 February 2012 Subject: Tandem Backgammon Forum: BGonline.org Forums

```If you play chess you might have heard of (and played) a very fun variant
called Bughouse Chess (also known as Tandem Chess) which is played between
two 2-players teams.

"Tandem Backgammon" was Fabrice Liardet's attempt to create something
similar for backgammon.  I really like the idea and would like to try out
this variant as soon as I get a chance. So I was wondering if anyone here
has played it and/or has an opinion about it?  Here are the rules and you

Rules of Tandem Backgammon

Main rules

1. Two two-players teams (team A, players A1 and A2, team B, players B1 and
B2) play a match to n points on two independent backgammon boards (A1 vs
B1, A2 vs B2), each with its own cube and its own clock. Each pair of
games is played simultaneously : the clocks are started in the same
time. After one of the games is finished, the other one is played until
the end.

2. All games count towards the same scoreline. E.g. if in the first pair of
games A1 wins a doubled gammon and A2 loses a single game, team A will

3. The clocks are reset after each pair of games. The recommended time
control is 2 minutes per game plus the usual 12-15 seconds of increment.

Details

4. If a team reaches n points by winning the first of the two simultaneous
games, the other game is still played until the end. If both teams reach
n points in the same pair of games, the match is a draw.

Variant 4'. If the tournament format requires a winner, then as soon as one
team reaches n points the match is over, even if the second game is
still unfinished.

5. If a player forfeits on time, his opponent scores the maximum number of
points which is still possible in the game (generally, three times the
cube value).

Fuzzy variant 5'. if the players agree that the forfeiting player can avoid
a gammon or a backgammon by minimally competent play, that player
doesn't lose the points of a single game, or respectively of a gammon.

6. ("Crawford" rule) When the opponents are 1 or 2 points away from winning
the match at the start of the game, it is allowed to send the cube in
only one of the two simultaneous games. That cube can very well be a
redouble to 4. The above rule applies to all games played from those
scores : there is no post-Crawford.

7. Unrestricted communication is allowed within a team, but not manual
intereference on the partner's board.
```

### 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)