4/2/2025 at 7:44:52 PM
I was playing around with having this model plot orbital trajectories and it was seriously impressive. Other top-tier models would struggle to get functional simulations working. Gemini 2.5 was able to do it after three or four turns in Cursor. It does feel like a meaningful step up in mathematical reasoning and math-dense coding.On the other hand, if you try to play chess with any of these reasoning models (including Gemini 2.5), it basically doesn't work at all. They keep forgetting where pieces are. Even with rl and sequential thinking on max, they consistently move pieces in impossible ways and mutate the board position.
In a recent test with Gemini 2.5, it used like 1700 thinking tokens to conclude it was in checkmate... but it wasn't. It's going to be very hard to trust these models to do new science or to operate outside of domains humans can verify while this kind of behavior continues.
by IceHegel
4/2/2025 at 7:49:04 PM
> They keep forgetting where pieces areThe vast majority of human chess players need to look at the board to know where the pieces are. Only a few people can know where all the pieces are if you just give them a list of moves. Have you tried evaluations where you give the LLM a representation of the board state at every move, as most human players would have, and which all chess engines track?
by parsimo2010
4/2/2025 at 7:58:01 PM
My prompt is: "Let's play chess. Show me the board each time." Which gives something like: a b c d e f g h
8 | r n b q k b n r | 8
7 | p p p p . . p p | 7
6 | . . . . . . . . | 6
5 | . . . . . . . . | 5
4 | . . . . P p . . | 4
3 | . . . . . . . . | 3
2 | P P P P . . P P | 2
1 | R N B Q K B N R | 1
a b c d e f g h
by IceHegel
4/2/2025 at 9:12:01 PM
If it's forgetting the board after showing you that each turn then I suppose that is a legitimate criticism.by parsimo2010
4/2/2025 at 7:51:47 PM
Regarding chess, I think that's an unfair challenge without access to long-term memory. Did you try to give it a memory scratchpad, e.g. with Letta?by falcor84