Show HN: TetrisBench – Gemini Flash reaches 66% win rate on Tetris against Opus

Post by purplecats » Mon, Jan 26, 2026, 9:59 PM UTC

Post by indigodaddy » Mon, Jan 26, 2026, 10:26 PM UTC

Post by bityard » Mon, Jan 26, 2026, 10:55 PM UTC

Post by mhh__ » Mon, Jan 26, 2026, 11:22 PM UTC

ykhli wrote: post #20

vunderba wrote: post #12

Interesting but frustratingly vague on details. How exactly are the models playing? Is it using some kind of PGN equivalent in Tetris that represents a on-going game, passing an ASCII representation, encoding as a JSON structure, or just directly sending screenshots of the game to the various LLMs?

answered this in a comment above! It's not turn or visual layout based since LLMs are not trained that way. The representation is a JSON structure, but LLMs plug in algorithms and keeps optimizing it as the game state evolves

Post by kinduff » Tue, Jan 27, 2026, 1:46 AM UTC

bubblesorting wrote: post #9

qsort wrote: post #7

Earlier quoted context omitted.

The worst thing is that the delayed auto shift is slightly off and it messes my finesse. (I used to play competitive tetris as well, but between getting older -> worse reflexes and vision problems I can't really play anymore. Weirdly, finesse muscle memory is still working.) I don't think the goal is to make a PvP simulator, it would be too easy to cheese or do weird strategies. It's mostly for LLMs to play.

Hello fellow Tetris nerd with a -sort username :) On the topic of reflexes decaying (I'm getting there, in my late 30s): Have you played Stackflow? It's a number go up roguelite disguised as an arcade brick stacking game, but the gravity is low enough that it is effectively turn based. More about 'deck' building, less about chaining PCs and C-Spins.