Defender Ricardo Carvalho admits Chelsea must learn from their mistakes against Bolton at the weekend if they are finish the job against Liverpool in the Champions League tonight.
Chelsea lead the Reds 3-1 after their superb performance at Anfield but the way they conceded three goals in nine minutes against Bolton would have given much inspiration to Rafa Benitez and his Liverpool squad.
Liverpool have to score at least three goals if they are to have any chance of turning the tie in their favour but Carvalho is convinced the Bolton debacle provided them with the timely wake-up call they needed.
'We have to learn from those mistakes and it is good to play three days after that game,' said Carvalho.
'We conceded too many when normally we are strong in our back four.'
Chelsea will be without suspended centre-back John Terry but Carvalho is adamant they can compensate for the England captain's absence.
'We will miss John but we can't change the rules, he got suspended so we have to try our best,' he added. 'The back four has to be compact and play as normal.'
The Portugal international insists Liverpool should not be taken lightly despite the two-goal cushion.
'We have to be aware, this competition means a lot for us so we want to go through,' said Carvalho. 'We have to think first of ourselves and after look for them, but if you are in good shape you can win the game and go through.
'We are improving always, we had some problems in the previous months but I think you become stronger and now we are in good shape to win a competition for the club.
'I won in 2004 [with Porto] but lost last year, but to win the trophy you have to be there in the final.'
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