This is probably a really stupid question but I’m sort of new to being competitive in fighting games, I was reading the frame data for Ryu’s medium shoryuken has 1-4 frames of invincibility. Does this mean all 4 frames he’s invincible OR that it’s at random that possibly 1, 2, 3 or 4 frames may be invincible?
You read that hyphen as “through,” so yeah, frames 1, 2, 3, and 4 are all frames where he’s invincible. Fortunately there’s no such mechanic as randomized invincibility. There are moves where invincibility skips some frames, but that’ll be written like “frames 2-5 and 8-13” or something.