[Robert103]

It's within the rules to block another alliance from getting to their tower, so long as that bot isn't touching their tower. You would only need to keep them at a distance and tangle them up long enough to prevent their minibot from having time to reach the top. Remember, endgame this year is only 10 seconds, so even by delaying them for a couple seconds, at the very least they would place lower in the race, possibly not at all. It is important to know when to back off though, because violation of G24 is a red card.