Newsletter for 2 November 2004

Election Day Special

On Tuesday, 2 November 2004, the Backgammon Club of San Diego met.

Tournament News

9 people entered a 16-player main tournament on Tuesday night. We had the following tournament results:

Main Tournament (16 player bracket)
  • 1st place:  Tom Fahland

  • 2rd place:  Mark Weiner

  • 3rd place:  Bruce Discher

    • Current Master Points Standings 

     1. Sho Sengoku      96
 2. Jason Lee        87
 3. Bruce Haight     82
 4. Tom Fahland      79
 5. Adrian Costa     66
 6. Osman Guner      50
 7. Fred Kamgar      38
 8. Eric Sedehi      32
 9. Henry Chaboki    26
10. Bruce Discher    20
11. Cyrus Mobedshahi 18
12. Mark Weiner      15
13. Marcia Karen      9
14. Stan Krimerman    8
14. Ryan Knowles      8
14. Ned Cross         8
17. Steve Blake       6
17. Kismet Hancer     6
17. Greg Kopp         6
20. Sam Mehri         4
20. Vito Volpetti     4
22. Chris Rosin       3
23. George Alessi     2
23. Jon Vietor        2
25. Maira Costa       1

    The point leader at the end of the year will be named the BCSD Player of the Year, and the top 16 in the Master Point standings will be invited to the 2004 BCSD Tournament of Champions, to be held in early 2005.

    Problem of the Week

    +-24-23-22-21-20-19-+---+-18-17-16-15-14-13-+
    | ' '2X2X2O2X|   |2X3X ' ' '2O|
    |                   |   |                   |
    |                 | 1 |       3 6       |
    |1X '2O '1X4O|   |2O2O1O ' '2X|
    +--1--2--3--4--5--6-+---+--7--8--9-10-11-12-+

    Match to 3, tied 0-0. Pip counts: White 134, Black 135
    Position ID: bLaDASGMt4UBAw Match ID: cIl5AAAAAAAA

    Last Week's Problem of the Week

    +-24-23-22-21-20-19-+---+-18-17-16-15-14-13-+
    | ' '2X ' '4X|   |1X1X ' ' '3O|
    |                   |   |                   |
    |                 | 1 |                 |
    | ' '1X2O '4O|   |3O2O ' ' '6X|
    |                   | 1O|                   |
    +--1--2--3--4--5--6-+---+--7--8--9-10-11-12-+

    Black on roll, tied 0-0 in a 3 point match.
    Pip counts: White 145, Black 133
    Position ID: jFfwAwiYd4MDQA Match ID: cAlgAAAAAAAA

    13 numbers hit, all of which are clear market losers, so there's actually no question it's a pretty solid double. What about the take? GNU says no! The gammon threat is quite high -- this sways the decision. At 3-away, 3-away, White needs 30% to take, but Black's significant gammon chances really raises the bar.

    Cube decision
    Rollout cubeless equity +0.609(Money: +0.539)
    Cubeful equities:
    1.Double, pass +1.000 
    2.Double, take +1.080 +0.080
    3.No double +0.860 -0.140
    Proper cube action:Double, pass
    Rollout details
     WinW gW bg LoseL gL bgCubelessCubeful
    Centered 1-cube0.6840.2290.009-0.3160.0640.002 +0.609 +0.860
    Standard error0.0010.0010.000-0.0010.0010.000 0.003 0.005
    Player White owns 2-cube0.6860.2440.011-0.3140.0640.002 +1.394 +1.080
    Standard error0.0010.0020.000-0.0010.0010.000 0.007 0.007
    Truncated cubeful rollout (depth 9) with var.redn.
    1296 games, Mersenne Twister dice gen. with seed 950505792 and quasi-random dice
    Play: 2-ply cubeful 50% speed
    keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
    Skip pruning for 1-ply moves.
    Cube: 2-ply cubeful 33% speed

    See you next week! Keep tossing those cubes,
    J. Lee

    Output generated by GNU Backgammon 0.14-devel (HTML Export version 1.123)