but i think XG has a big BUG and its related to using the cube. why XG raise the cube to 2024 at backgames? backgame player always say welcome to the raising of cube!
I actually agree with you, in what the bots do. A human would very reluctantly cube in a match Vs a weaker opponent in backgames for various reasons, while the bots simply base their cube decisions on the Match Equity table after estimating Wins (single), % gammons and % backgammons for each side . Hence they would double or redouble with no restriction if they judge it worths it.
There is also another weakness in how Bots handle backgames imo. That has to do with the so called "timing". A human would avoid hitting too much because this offers his opponent all the timing he needs to have an effective backgame. Bots prefer hitting for their + in equity without usually caring much about the timing factor. Probably because the effect of timing will show up in 8+ plies while bots are not designed to "think" that deep. Of course they have some correction code running at the end that tries to correct their timing, some rolls before the bearing off phase, by recirculating some checkers. Sometimes it works sometimes it doesn't.
And thirdly you might want to know that the way bots evaluate each possible move, fails many times when the options for that roll are too many. Imagine a roll has 24 possible plays, it often occurs that the best move fails to make it trough their 3-4 ply evaluation and it could even fail to make it through in rollouts. This is because at some point during this evaluation phase bots start scraping out moves. This is what some people call "confusion" of bots. Such cases where a roll has too many alternative plays are more frequent in backgames.