Forum Archive :
Variations
Last night our club ran an experimental tournament of cancelgammon. The
starting position was as in Diagram 1 and during each game each opponent
could cancel one opponent's roll. When a roll is cancelled the person
whose roll was cancelled rerolls. Cube actions cannot be cancelled.
In general I found this game more mentally demanding than normal BG - more
variables to think about.
24 23 22 21 20 19 18 17 16 15 14 13
+---+---+---+---+---+---+---+---+---+---+---+---+---+
| X X O | | O X |
| X O | | O X |
| O | | O X |
| O | | X |
| | | X |
| | | |
| | | |
| | | O |
| X | | O |
| X | | X O |
| O X | | X O |
| O O X | | X O |
+---+---+---+---+---+---+---+---+---+---+---+---+---+
1 2 3 4 5 6 7 8 9 10 11 12
During one of my matches I was X in the position below. No roll has been
cancelled in this particular game. Question: Should I double? If I double
and hit, my roll will be cancelled and I would have to try to hit with the
cube on 2. If I do not double and hit my roll will be cancelled as well
and then I can double. Thus in both situations I would have to hit with
the cube on 2. But! If I do not double, hit and have the roll cancelled,
do I have the right to double before rerolling? In normal BG if one takes
a shake and his dice pop out cocked s/he must reroll, but s/he cannot
double instead of rerolling. Does the "cancel" part of cancelgammon
require a modification to this rule?
Match to 5, tied at 0
X on roll. Cube Action?
24 23 22 21 20 19 18 17 16 15 14 13
+---+---+---+---+---+---+---+---+---+---+---+---+---+
| O O O O | | O X |
| O O O O | | X |
| O O O O | | |
| O | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| X X X | | |
| X X X X X | | |
| X X X X X | | O |
+---+---+---+---+---+---+---+---+---+---+---+---+---+
1 2 3 4 5 6 7 8 9 10 11 12
Ilia
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Gary O writes:
Interesting variant! I would allow cube action after a cancel (SLIGHT
amount of vig to the person with a cancel left) I think the double, roll,
cancel should include notching the cube back (still allowing another cube
action on that turn - increases intropy for the uninitiated.) the cancel
option looks to have implications for checker play. (ie. you hit he
canceled, how would you play a 63 with or without your cancel option ---
if you still had cancel 13/7*, 13/10 but without the option you might
rather play 13/7*, 6/3 halving the chance of the fly shot.
This position looks like double/take.
Perhaps another rule change would allow each player to cancel one of their
own rolls (I've had WAY to many rolls that I'd like to reroll)
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Happy Juggler writes:
What would normally be a cube in volatile positions will usually not be a
cube if your opponent has not used his cancel yet. In this position I
would not cube here with those rules. If I do not roll well the roll will
stand. If I do roll well the roll gets canceled. Therefore the bad rolls
for X will come up more often. I would roll here. If I rolled poorly I
would be glad I did not cube. If I rolled well then white would cancel,
and then I would cube.
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Tom Ewall writes:
I think it makes more sense to allow doubling after a cancel than to
proscribe it.
I think this position is a double even with the cancel. It's true you lose
some of your equity because your opponent's cancel, but you also have a
cancel available, which mitigates that somewhat.
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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)
- Bad advice (Jason Lee+, Mar 2004)
- 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)
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