• Doublets are supposed to be lucky

    From Timothy Chow@21:1/5 to All on Thu Apr 21 09:32:11 2022
    XGID=-BAB-bCBB-bBa--a-bbcb-A---:1:1:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O O | | O O X |
    | O O | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | X O X X | | X O X X | | 2 |
    | O X O X X | | X O X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 102 O: 151 X-O: 0-0
    Cube: 2, X own cube
    X to play 44

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From pepstein5@gmail.com@21:1/5 to Tim Chow on Thu Apr 21 10:14:59 2022
    On Thursday, April 21, 2022 at 2:32:14 PM UTC+1, Tim Chow wrote:
    XGID=-BAB-bCBB-bBa--a-bbcb-A---:1:1:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O O | | O O X |
    | O O | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | X O X X | | X O X X | | 2 |
    | O X O X X | | X O X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 102 O: 151 X-O: 0-0
    Cube: 2, X own cube
    X to play 44

    11/7(2) 8/4(2). We are big underdogs. Our main winning parlay is to quickly roll a 6 and hope that either the 6 lets us hit or
    that we can avoid being hit while we cash in our racing lead.
    Keeping the 11 point rather than breaking it seems to just make our game more difficult -- just an extra difficult point to clear.
    So 11/7(2). Although we have a racing lead, many of our wins come from hitting so we do well to strengthen our board with
    8/4(2).

    Paul

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  • From Timothy Chow@21:1/5 to All on Sun Apr 24 08:41:54 2022
    XGID=-BAB-bCBB-bBa--a-bbcb-A---:1:1:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O O | | O O X |
    | O O | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | X O X X | | X O X X | | 2 |
    | O X O X X | | X O X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 102 O: 151 X-O: 0-0
    Cube: 2, X own cube
    X to play 44

    Paul is in good company with his play of 11/7(2) 8/4(2), because
    that's what XG 3-ply plays too. However, a rollout overturns that
    judgment. I believe that the reason is that giving up the 11pt
    gives O too much free rein to flood the outfield and contain X's
    straggler. Even given that, though, I'm a little surprised that
    XG volunteers a blot on the 7pt with 8/4(2) 7/3 6/2 instead of
    playing 8/4(2) 7/3(2).

    1. Rollout¹ 8/4(2) 7/3 6/2 eq:-0.182
    Player: 35.75% (G:12.58% B:0.10%)
    Opponent: 64.25% (G:10.39% B:0.37%)
    Confidence: ±0.009 (-0.191..-0.174) - [100.0%]

    2. Rollout¹ 8/4(2) 7/3(2) eq:-0.227 (-0.045)
    Player: 34.12% (G:10.96% B:0.10%)
    Opponent: 65.88% (G:10.24% B:0.38%)
    Confidence: ±0.009 (-0.236..-0.218) - [0.0%]

    3. Rollout¹ 11/7 11/3 6/2 eq:-0.259 (-0.077)
    Player: 32.45% (G:10.38% B:0.06%)
    Opponent: 67.55% (G:7.28% B:0.22%)
    Confidence: ±0.008 (-0.267..-0.251) - [0.0%]

    4. Rollout¹ 11/7(2) 8/4(2) eq:-0.260 (-0.078)
    Player: 31.90% (G:11.06% B:0.08%)
    Opponent: 68.10% (G:5.54% B:0.16%)
    Confidence: ±0.008 (-0.269..-0.252) - [0.0%]

    ¹ 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller

    eXtreme Gammon Version: 2.19.207.pre-release

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Stick Rice@21:1/5 to Tim Chow on Mon Apr 25 13:58:26 2022
    On Sunday, April 24, 2022 at 8:41:57 AM UTC-4, Tim Chow wrote:
    XGID=-BAB-bCBB-bBa--a-bbcb-A---:1:1:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O O | | O O X |
    | O O | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | X O X X | | X O X X | | 2 |
    | O X O X X | | X O X X X | +---+ +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 102 O: 151 X-O: 0-0
    Cube: 2, X own cube
    X to play 44
    Paul is in good company with his play of 11/7(2) 8/4(2), because
    that's what XG 3-ply plays too. However, a rollout overturns that
    judgment. I believe that the reason is that giving up the 11pt
    gives O too much free rein to flood the outfield and contain X's
    straggler. Even given that, though, I'm a little surprised that
    XG volunteers a blot on the 7pt with 8/4(2) 7/3 6/2 instead of
    playing 8/4(2) 7/3(2).

    1. Rollout¹ 8/4(2) 7/3 6/2 eq:-0.182
    Player: 35.75% (G:12.58% B:0.10%)
    Opponent: 64.25% (G:10.39% B:0.37%)
    Confidence: ±0.009 (-0.191..-0.174) - [100.0%]

    2. Rollout¹ 8/4(2) 7/3(2) eq:-0.227 (-0.045)
    Player: 34.12% (G:10.96% B:0.10%)
    Opponent: 65.88% (G:10.24% B:0.38%)
    Confidence: ±0.009 (-0.236..-0.218) - [0.0%]

    3. Rollout¹ 11/7 11/3 6/2 eq:-0.259 (-0.077)
    Player: 32.45% (G:10.38% B:0.06%)
    Opponent: 67.55% (G:7.28% B:0.22%)
    Confidence: ±0.008 (-0.267..-0.251) - [0.0%]

    4. Rollout¹ 11/7(2) 8/4(2) eq:-0.260 (-0.078)
    Player: 31.90% (G:11.06% B:0.08%)
    Opponent: 68.10% (G:5.54% B:0.16%)
    Confidence: ±0.008 (-0.269..-0.252) - [0.0%]

    ¹ 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller

    eXtreme Gammon Version: 2.19.207.pre-release

    ---
    Tim Chow

    4(2) 3(2) doesn't make the 5 point board and leaves a slightly more inflexible position that maybe never makes the 5 point board. And XG leaves the blot because it's hardly any shots. On a lot (most) twos the opponent shouldn't hit.

    Stick

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