DISCUSSIONS on “Rules for online games in HoMM3 and formulas for calculating player rating.”

5.5. The so-called "red rush" is prohibited; that is, a player playing as red is not allowed to attack blue on the first day of the week with reinforcements purchased on that day. However, troops arriving with a hero purchased on that day can be used.

5.5. The so-called "red rush" is prohibited; that is, a player playing as red is not allowed to attack on the first day of the week with reinforcements purchased on that day:

a) against blue's Castle (even if the Castle is not guarded).
b) against blue's heroes or guarded mines if having reinforcements may affect the outcome of the battle or losses in the battle for either player.

* Troops arriving with purchased heroes, as well as troops from ambushes, pandoras, etc., can be used without restrictions.
* The concept of red rush applies only to Castles, heroes, and mines.
* The concept of red rush does not apply if both heroes end up on opposite sides of a portal or underground gate during an attack (i.e., on different sides of the portal).