Is it possible to stop a Pokemon evolving via trade in Gen 1?
If I level up a Pokemon and it's about to evolve, I can hold down B to stop it.
What about if I trade Kadabra, Graveler, Machoke or Haunter? Can I stop them from evolving when I trade them somehow? I tried it just now and held down B, and they seemed to evolve anyway.
In Gen 1, the only way to stop a Pokemon from evolving was by pressing B. However, evolution stones and trading trumped pressing the B button.
According to https://gamefaqs.gamespot.com/gameboy/367023-pokemon-red-version/answers/594367-can-you-cancel-trade-evolutions-in-rby and personal experience.