the usual strategy for the attacking team is to try make the opponent lose their trumps, so they will not be able to cut the other trick. once it is done they may start to think about trying to get the ace or 10 card. there is only one way to get an ace: to cut it. that is why whenever a team mate is about to take the current trick, someone should play the colour in which someone has one less card. to get a ten someone may play an ace at the second trick or cut it.