The Ivory Coast forward finished off a flowingcounterattack in the 75th minute with a shot that squirmedinto the far corner, earning Chelsea a replay at StamfordBridge.
Everton was in control for long periods at Goodison Parkbut only had one goal to show for its dominance, with Francestriker Louis Saha heading home powerfully from a corner byLeighton Baines in the 62nd for a seventh goal in his lasteight games against the London club.
"To come back into the game, we had good attitude andgood spirit," Chelsea manager Carlo Ancelotti said. "It wasnot easy - Everton put pressure on us all the time."
Chelsea came close to snatching a win when Brazilmidfielder Ramires hit the post in the 86th, while substituteEverton striker Jermaine Beckford forced an acrobatic save outof Petr Cech in the final minute.
Jack Rodwell, Marouane Fellaini and Seamus Coleman hadall earlier gone close for Everton, which lost 2-1 to Chelseain the 2009 final at Wembley.
Chelsea has won three of the last four FA Cups, includingthe last two. The team is looking to become the first to winthe cup for three seasons straight since 1886.
In the two other all-Premier League matches yesterday,Aston Villa defeated Blackburn 3-1 at Villa Park and Boltonwas held 0-0 at home by Wigan.
Ciaran Clark, veteran former France winger Robert Piresand Nathan Delfouneso scored Villa''s goals, all of them comingin the first half. Nikola Kalinic had equalized for Blackburnin the 18th, while Villa had to survive the last 28 minuteswith 10 men following the sending-off of Nathan Baker for adangerous tackle on David Hoilett.
Birmingham, which reached the League Cup final inmidweek, rallied to beat Midlands rival Coventry 3-2 thanks tosecond-half goals by fringe players Stuart Parnaby and KevinPhillips.
Coventry, which plays in the second-tier LeagueChampionship, went 2-0 up by the 26th minute but on-loanmidfielder David Bentley scored in the 35th to beginBirmingham''s fightback.
Crawley Town missed two penalties but still became thefirst non-league side to qualify for the competition''s fifthround since 1994 thanks to a 1-0 victory at 10-man Torquay.
Matt Tubbs scored the winner for the Crawley, which istop of the Blue Square Premier League - England''s fifthhighest league.
In the day''s other surprises, League Championship sidesSwansea and Watford lost home matches to Leyton Orient andBrighton, who both play in English football''s third division.
Unbeaten Premier League leader Manchester United visitsthird-tier side Southampton later Saturday for a place in thelast 16. (AP) SHN