Why did Ian Nepomniachtchi get a replay for the castling issue in the 2019 WFRCC vs Wesley So, but Wesley So didn't get a replay for the castling issue in the 2022 WFRCC vs Nepo?
I mean I know the cases are different:
- Nepo knew the rules but didn't know how to implement the castling given the rook was occupying the square that the king was supposed to be in.
- Wesley So didn't know the rules.
But I want to know exactly why the difference implies the results: Nepo gets a replay, while Wesley So doesn't? They both didn't know something and would've done otherwise had they known.