Liverpool boss Jurgen Klopp says his side have to be "their best selves" to overturn a two-goal deficit in their Champions League quarter-final second leg against Real Madrid on Wednesday.

Real won 3-1 in Spain last week, meaning Liverpool need to win by at least two goals at Anfield to advance.

"When you're 3-1 down, it looks like we're already out so we have nothing to lose and will try," said Klopp.

"To beat Real Madrid you have to defend at your highest level and also create."

Liverpool have reached two Champions League finals under Klopp, losing to Real in 2017-18 before beating Tottenham in 2018-19.

But the Reds, sixth in the Premier League and unable to retain their domestic title, have it all to do after two Vinicius goals and another from Marco Asensio helped Real to a first-leg success.

"We have to bring ourselves in a mood and start believing again. If we can see it's possible then we have a chance but it's still incredibly difficult." added Klopp.

Two seasons ago in the semi-finals Liverpool lost 3-0 in the first leg away at Barcelona before winning 4-0 at Anfield. In 2016 in a Europa League quarter-final, the Reds trailed 4-2 on aggregate with 24 minutes to go against Borussia Dortmund but recovered to progress.

"You don't get a comeback because you had one in the past," added the German.

The winners of the tie will play Chelsea in the semi-finals after Thomas Tuchel's side beat Porto 2-1 on aggregate, despite losing 1-0 in the second leg on Tuesday.