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  • Blitzing at gammon save?

    From Timothy Chow@21:1/5 to All on Fri Sep 2 10:07:42 2022
    XGID=--BCaBBBBa--------bbcbbBb-:0:0:1:64:1:0:1:2:10

    X:Player 1 O:Player 2
    Score is X:1 O:0 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O | | O O O O X O |
    | O | | O O O O X O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | X X | | X X X X |
    | O X X | | X X O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 111 O: 94 X-O: 1-0/2 Crawford
    Cube: 1
    X to play 64

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Stick Rice@21:1/5 to Tim Chow on Fri Sep 2 17:20:02 2022
    On Friday, September 2, 2022 at 10:07:44 AM UTC-4, Tim Chow wrote:
    XGID=--BCaBBBBa--------bbcbbBb-:0:0:1:64:1:0:1:2:10

    X:Player 1 O:Player 2
    Score is X:1 O:0 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O | | O O O O X O |
    | O | | O O O O X O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | X X | | X X X X |
    | O X X | | X X O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 111 O: 94 X-O: 1-0/2 Crawford
    Cube: 1
    X to play 64

    ---
    Tim Chow

    I wouldn't consider it blitzing but what other play has any merit? Out and hit has to win a veritable truckload more games than any other checker shuffling play.

    Stick

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Sun Sep 4 09:40:30 2022
    XGID=--BCaBBBBa--------bbcbbBb-:0:0:1:64:1:0:1:2:10

    X:Player 1 O:Player 2
    Score is X:1 O:0 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O | | O O O O X O |
    | O | | O O O O X O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | X X | | X X X X |
    | O X X | | X X O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 111 O: 94 X-O: 1-0/2 Crawford
    Cube: 1
    X to play 64

    As Stick says, this is not really a blitz; it's maybe better to call
    it a containment position. At any score other than gammon save (or
    something close to it), I would hit and split without hesitation,
    but at gammon save I wasn't sure.

    1. Rollout¹ 23/17 8/4* eq:-0.696
    Player: 47.01% (G:10.55% B:0.73%)
    Opponent: 52.99% (G:31.80% B:3.19%)
    Confidence: ±0.006 (-0.702..-0.690) - [100.0%]

    2. Rollout¹ 7/3 7/1 eq:-0.867 (-0.171)
    Player: 18.04% (G:0.91% B:0.02%)
    Opponent: 81.96% (G:11.40% B:0.59%)
    Confidence: ±0.004 (-0.871..-0.863) - [0.0%]

    3. Rollout¹ 8/2 8/4* eq:-0.878 (-0.182)
    Player: 26.62% (G:4.01% B:0.12%)
    Opponent: 73.38% (G:20.52% B:2.17%)
    Confidence: ±0.005 (-0.883..-0.872) - [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, MET: Kazaross XG2

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)