Hi, I've never posted here, so please correct me if I'm wrong at any point. I am thinking that if you started the game at the exact frame, then you can just memorize the perfect pattern for the entire game, and do it. I believe this because I have made TASs of this game, and in order for the TAS to play out correctly, the movements would have to be perfectly synced to the frame.

I'm not sure all the pieces are selected at a single global frame when you start the game, or if they are generated in real-time as you play.

They have to be determined by the frame, otherwise TASing this game would be completely impossible.

Here are the details of the RNG used: https://meatfighter.com/nintendotetrisai/#Picking_Tetriminos

As I understand it from the TAS notes this luck can be manipulated; partially with pausing the game since each frame the RNG is being changed. However I don't think it is possible to get a set pattern or keep track of every frame/next piece determination without tools. I'm sure Baxter and Acmlm know more since they are the ones that created the TAS.