Puzzle time

[poweewee]

Ok, here is an easier one, also from the Winter World Cup.

Red has just killed some of Blue's soldiers and is poised to attack. One of the keys to defending the position is killing their mobi.

It is blue's turn, and he has 7 wits. Question is, how do you kill Red's mobi without letting yours be killed?

(Of course you can just view the replay for the answer, but where is the fun in that? )