Opening Rolls

Forum Archive : Opening Rolls

Opening 64: Split to 20?

From:   Peter Bell
Date:   9 June 1995
Subject:   Re: Opening 6-4
Google:   3r9uek$


Dave Boggitt asked about playing an opening 6-4 as 24/20, 13/7, which
leads to the following position:

  24  23  22  21  20  19      18  17  16  15  14  13
 | X               X   O |   |     O               X |
 |                     O |   |     O               X |
 |                     O |   |     O               X |
 |                     O |   |                     X |
 |                     O |   |                       |
 |                       |BAR|                       |
 |                     X |   |                     O |
 |                     X |   |                     O |
 |                     X |   |     X               O |
 | O                   X |   |     X               O |
 | O                   X |   | X   X               O |
   1   2   3   4   5   6       7   8   9  10  11  12

This move seems too aggressive to work well against a top player, or even
an intermediate like myself.  As O in such a position, after ANY roll, I
can and would hit a blot (with 2-5 and 4-5, I would hit on the 24-pt and
split my runners).  I also have 9 or 10 rolls (1-4, 1-6, 3-3, 3-4, 3-6,
and maybe 6-6) that double-hit.  Encouraging such contact with an
otherwise useful opening roll does not seem right.  Furthermore, an
exchange of hits on the 7-pt is bad for X, who will end up with 4 or 5 men
back, while O will only have 2 back.  Such a situation is a big
disadvantage against a skillful player.  The more respected splitting play
24/18, 13/9 makes sure almost every blot-hitting contest will take place
on the opponent's side of the board.

On the positive side, this type of opening move can work well against a
beginner.  If O is at all timid about hitting in this position, X often
will build a sizeable advantage quickly.  Also, X won't be worried about
having extra men back against a beginner.  The extra equity against weaker
players might make this move a good practical option.  I, for one, would
not play it against strong opponents.

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Opening Rolls

At different match scores  (Louis Nardy Pillards, July 2002) 
Average advantage of winning opening roll  (Chuck Bower, Oct 1998) 
Choosing a strategy  (Daniel Murphy, June 2001) 
Early game rule of thumb  (Rich Munitz, Feb 2009) 
Factors to consider  (Kit Woolsey, July 1994) 
How computers play  (Kit Woolsey, Mar 1995)  [Recommended reading]
Magriel's Chapter 5  (Hayden Alfano+, May 2006)  [Long message]
Mloner vs Jellyfish  (Kit Woolsey, Dec 1995) 
Nactating a whole game  (Nack Ballard+, Jan 2011)  [Long message]
Nactation  (Jim Stutz+, June 2010) 
Nactation overview  (Nack Ballard, Oct 2009) 
Nactation--Why use it?  (leobueno+, Jan 2011) 
Opening 1's: Split or slot?  (Douglas Zare, Dec 2003) 
Opening 21: Rollout  (Stick, Mar 2006)  [GammOnLine forum]
Opening 21: Split or slot?  (Dick Adams+, Dec 2003) 
Opening 32: Rollout  (Stick, Feb 2006)  [GammOnLine forum]
Opening 43: In GOL online match  (Raccoon+, Feb 2004)  [GammOnLine forum]
Opening 43: Pros and cons  (Stick+, Jan 2006)  [GammOnLine forum]
Opening 43: Which split is better?  (Peter Backgren+, Aug 2000) 
Opening 43: Which split is better?  (Michael J. Zehr+, Mar 1996) 
Opening 51: Rollout  (Stick, Feb 2006)  [GammOnLine forum]
Opening 52: Merits of splitting  (Peter Bell, Apr 1995) 
Opening 53: Magriel's recommendation  (George Parker+, July 1997)  [Long message]
Opening 53: Split to 21?  (Alex Zamanian, Aug 2000) 
Opening 53: Why make the three point?  (Kit Woolsey+, Feb 1996) 
Opening 6's: Slot the bar point?  (Chuck Bower+, Feb 2000) 
Opening 6's: Slot the bar point?  (David Montgomery, June 1995) 
Opening 62: Could running be best?  (Gary Wong, Sept 1997) 
Opening 62: Split, run, or slot?  (Chuck Bower, May 1997) 
Opening 63: Middle Eastern split?  (Mark+, Apr 2002) 
Opening 63: Slot the four point?  (Dennis Cartwright+, Mar 2002) 
Opening 64: Make the two point?  (William Hill+, Jan 1998) 
Opening 64: Make the two point?  (Darse Billings, Feb 1995) 
Opening 64: Rollout  (Peter Grotrian, Jan 2006)  [GammOnLine forum]
Opening 64: Split to 20?  (Peter Bell, June 1995) 
Opening 64: Three choices  (Brian Sheppard, July 1997) 
Opening 65: Becker on lover's leap  (Jeffrey Spiegler+, Aug 1991) 
Opening 65: Computer rankings  (Chuck Bower, Jan 1997) 
Opening rolls ranked  (Arthur+, Apr 2005) 
Rollouts of opening 21 and replies  (Alexander Nitschke, Oct 1997) 
Rollouts of openings  (Tom Keith+, Jan 2006) 
Rollouts: Expert Backgammon  (Tom Fahland, Aug 1994) 
Rollouts: Jellyfish 3.0  (Midas+, Sept 1997) 
Rollouts: Jellyfish 3.0 level 6  (Chuck Bower, Feb 1999)  [Recommended reading]
Rollouts: Snowie 4.1  (Rene Cerutti, Apr 2004) 
Slotting the four point  (Joe Loria+, Oct 1999) 
Snowie's openers and replies  (rcerutti, Feb 1999)  [Long message]
Splitting versus building  (Dave Slayton+, Aug 2000) 
Splitting versus slotting  (Daniel Murphy, Apr 2001) 
Splitting versus slotting  (Daniel Murphy, Sept 1997) 
Trice's rankings  (Marty Storer, Feb 1992) 

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