Open GregNeto opened 6 years ago
another strange 3 fold
[Event "237 v200 h5 40"] [Site "WENGLER"] [Date "2018.05.04"] [Round "14"] [White "Houdini 5 40"] [Black "Lczero v 0.8 237 v200"] [Result "1/2-1/2"] [BlackElo "2200"] [ECO "A80"] [Opening "Holländische Verteidigung"] [Time "16:06:45"] [Variation "2.Nc3 Nf6 3.Bg5 e6"] [WhiteElo "2200"] [Termination "normal"] [PlyCount "172"] [WhiteType "program"] [BlackType "program"]
These both seem to be fairly innocent problems.
In the first game, Bd4 has a really low probability from the policy head, so takes a while to be searched.
Once it's searched, Leela immediately sees the draw, but it takes more nodes than Leela got in the game (based on the reported depth of 10; finding that Rc7 allows the draw and switching to a new move takes about 233 nodes/depth 14 on my machine).
In the second it just takes Leela quite a bit of searching to find the win, and it didn't have the time to in the game (again, all the reported depths around there are in the 8-10 range, which correspond to node counts that aren't enough for it to solve this position; it takes it about 3700 nodes/depth 17 on my machine to switch from taking the draw by repetition to playing the win on the final ply).
I 'somewhat' expect that there should be some improvement with respect to 3 fold once the history key fix is in, and some more once the training data is generated based on it.
don´t know if its an arena issue, here is the game (v0.8, net 237)
[Event "Sun"] [Site "WENGLER"] [Date "2018.05.03"] [Round "3"] [White "Lczero v 0.8 237"] [Black "Sungorus64"] [Result "1/2-1/2"] [BlackElo "2200"] [ECO "B01"] [Opening "Skandinavische Verteidigung"] [Time "16:58:31"] [Variation "2...Qxd5 3.Nc3 Qa5 4.Bc4 Nf6"] [WhiteElo "2200"] [TimeControl "60+1"] [Termination "normal"] [PlyCount "134"] [WhiteType "program"] [BlackType "program"]