Command & Conquer: Red Alert 2 Tips

Ultimate Yuri
(This code will only work with yuri, you will also need friends with Allied/Soviet side)
1. Build up your base. Then, build yuri prime.
2. Go close to your friend's base. Choose yuri prime, press CTRL and click your frieds ConYard. You now "have" this conyard.
3. Build Allied/Soviet barracks, war factory and repair depot.
4.Do agains steps 2-3 with other type base.
5. You now can build allied and/or soviet MCV!