What does flash do in Pokemon Yellow?

In Pokémon Yellow, Flash is a HM (Hidden Machine) move that allows you to illuminate dark areas like caves and the Silph Co. building. It's a non-combat move and functions as a light source rather than an attack.

Here's how Flash works:

* Unlocking Flash: You need to obtain HM05 from the Pokemon Trainer's School in Pallet Town.

* Using Flash: Once you've learned Flash, you can select it in your menu and use it in any dark area.

* Effect: Flash illuminates the immediate area, allowing you to see clearly and navigate the darkness.

* Accessibility: Flash is essential for progressing through certain areas in the game, such as the following:

* Viridian Forest: Some trainers are located in dark areas that require Flash to access.

* Rock Tunnel: This area is completely dark and requires Flash to navigate.

* Silph Co. Building: Parts of this building are dark and require Flash to progress.

* Power Plant: A section of this building requires Flash.

While Flash may not be a powerful attack, it's a necessary tool for exploration and progression in Pokémon Yellow.