• I assessed a position correctly

    From peps...@gmail.com@pepstein5@gmail.com to rec.games.backgammon on Sun Jan 28 07:57:31 2024
    From Newsgroup: rec.games.backgammon

    Here I had a clear preference for the greedy play -- I wasn't in coin-toss mode.
    Though I did consider the decision close.
    And that's exactly what the bot says -- play greedy but the decision's close. Obviously, it makes all the difference in the world that I usually have a return shot if hit.

    Paul

    XGID=aBCCBBB---------------acc-:1:-1:1:62:9:9:0:11:10

    X:Daniel O:XG Roller+
    Score is X:9 O:9 11 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O | +---+
    | | | O O | | 2 |
    | | | O O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | O | |
    | | | |
    | | | X X |
    | | | X X X X X X |
    | | | X X X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 47 O: 37 X-O: 9-9/11
    Cube: 2, O own cube
    X to play 62

    1. 4-ply 6/Off 2/Off eq:+0.166
    Player: 58.31% (G:0.00% B:0.00%)
    Opponent: 41.69% (G:0.00% B:0.00%)

    2. 4-ply 6/4 6/Off eq:+0.145 (-0.021)
    Player: 57.25% (G:0.00% B:0.00%)
    Opponent: 42.75% (G:0.00% B:0.00%)

    3. 3-ply 6/Off 3/1 eq:+0.049 (-0.117)
    Player: 52.44% (G:0.00% B:0.00%)
    Opponent: 47.56% (G:0.00% B:0.00%)

    4. 1-ply 6/Off 5/3 eq:-0.246 (-0.413)
    Player: 37.68% (G:0.00% B:0.00%)
    Opponent: 62.32% (G:0.00% B:0.00%)

    5. 1-ply 6/Off 4/2 eq:-0.280 (-0.446)
    Player: 35.99% (G:0.00% B:0.00%)
    Opponent: 64.01% (G:0.00% B:0.00%)


    eXtreme Gammon Version: 2.10, MET: Kazaross XG2
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Mon Jan 29 09:07:20 2024
    From Newsgroup: rec.games.backgammon

    On 1/28/2024 10:57 AM, peps...@gmail.com wrote:
    Obviously, it makes all the difference in the world that I usually have a return shot if hit.

    Your opponent's blot is certainly relevant, but I think the primary consideration is how close the race is.

    ---------
    Variant 1
    ---------

    XGID=aBCCBBB------------a---cc-:1:-1:1:62:9:9:0:11:10

    Score is X:9 O:9 11 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O | +---+
    | | | O O | | 2 |
    | | | O O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | O | |
    | | | |
    | | | X X |
    | | | X X X X X X |
    | | | X X X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 47 O: 40 X-O: 9-9/11
    Cube: 2, O own cube
    X to play 62

    1. Rollout-| 6/4 6/Off eq:+0.281
    Player: 64.05% (G:0.00% B:0.00%)
    Opponent: 35.95% (G:0.00% B:0.00%)
    Confidence: -#0.002 (+0.279..+0.283) - [100.0%]

    2. Rollout-| 6/Off 2/Off eq:+0.273 (-0.008)
    Player: 63.65% (G:0.00% B:0.00%)
    Opponent: 36.35% (G:0.00% B:0.00%)
    Confidence: -#0.002 (+0.271..+0.275) - [0.0%]

    -| 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 4-ply, cube decisions: XG Roller+
    Search interval: Large

    eXtreme Gammon Version: 2.19.211.pre-release, MET: Kazaross XG2

    ---------
    Variant 2
    ---------

    XGID=aBCCBBB----------------cc-:1:-1:1:62:9:9:0:11:10

    Score is X:9 O:9 11 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O | +---+
    | | | O O | | 2 |
    | | | O O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | O | |
    | | | |
    | | | X X |
    | | | X X X X X X |
    | | | X X X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 47 O: 34 X-O: 9-9/11
    Cube: 2, O own cube
    X to play 62

    1. Rollout-| 6/Off 2/Off eq:-0.077
    Player: 46.16% (G:0.00% B:0.00%)
    Opponent: 53.84% (G:0.00% B:0.00%)
    Confidence: -#0.001 (-0.078..-0.076) - [100.0%]

    2. Rollout-| 6/4 6/Off eq:-0.097 (-0.020)
    Player: 45.17% (G:0.00% B:0.00%)
    Opponent: 54.83% (G:0.00% B:0.00%)
    Confidence: -#0.001 (-0.098..-0.095) - [0.0%]

    -| 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 4-ply, cube decisions: XG Roller+
    Search interval: Large

    eXtreme Gammon Version: 2.19.211.pre-release, MET: Kazaross XG2

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2