[TOURNAMENT-Hota] "Новичок - 2018. Summer"

Perhaps it was my oversight; I specified that on all maps in the tournament, the turn limit is 117.

But let's assume that all of this happened on turn 115... I still don't see any reason why Blue should be forced to repeat the actions he took before he knew about Red's appearance. I also don't quite understand how this could harm Red.

If Blue is allowed to replay his turn and perform different actions during that turn, as Nodl writes:

On turn 117, the turn limit is reached. After lengthy discussions, I replayed my turn 117, taking into account the opponent's appearance.

, then Red will see a completely different situation on his turn than the one that existed when the turn limit was reached. This directly affects Red's position (advantage). A similar example can be given when a connection is lost during a battle, in which the opponent, using a specific tactic, positions his archers and exposes himself to a meteor strike, but when the battle is replayed, he arranges his units differently, "taking into account the knowledge of the meteor strike."
In general, the time has come to specifically state in the rules whether replaying Blue's turn is mandatory or not. Situations can vary; sometimes, Blue doesn't even see how Red approaches the castle in two turns (not one) and captures it. If Blue is not given the opportunity to replay his last turn and see Red approaching, so that he has the opportunity to return his army and hero to defend his castle, this would be a significant disadvantage for Blue.