Postpublished at 82 mins
Arsenal 2-1 Chelsea
Arsenal are less than 10 minutes away from the FA Cup, and a place in the Europa League next season. They win a corner
FT: Arsenal 2-1 Chelsea - live on BBC One and this page
Pulisic opens scoring for Chelsea before Aubameyang scores in either half
Kovacic sent off for two bookings before Pedro carried off leaving Blues down to nine
Listen to radio commentary on BBC Radio 5 live and this page
Send us your pictures, celebrations and thoughts via #bbcfacup
Tom Rostance
Arsenal 2-1 Chelsea
Arsenal are less than 10 minutes away from the FA Cup, and a place in the Europa League next season. They win a corner
Arsenal 2-1 Chelsea
There's plenty going on - does Arsenal goalkeeper Emi Martinez handle the ball outside the area?! That is very close.
Both of Mateo Kovacic's yellow cards are soft, they just show them back. Not every foul is a booking, not every tackle is a foul.
Arsenal replace Alexandre Lacazette with Eddie Nketiah.
Arsenal 2-1 Chelsea
Chelsea send on Ross Barkley, Callum Hudson-Odoi and Tammy Abraham. Going for it, as they have to. They are down to 10 men let's not forget.
Arsenal 2-1 Chelsea
Brilliantly taken...
Arsenal 2-1 Chelsea
Sorry, my system went down for a moment there - in the aftermath of the red card Mikel Arteta was booked. Now Chelsea make a flurry of changes...
Arsenal 2-1 Chelsea
Chris Sutton
Premier League winner on BBC Radio 5 Live
Pierre-Emerick Aubameyang would cost zillions to replace. Absolute zillions.
Arsenal 2-1 Chelsea
Chris Sutton
Former Premier League striker on BBC Radio 5 Live
I'm not sure it is a booking. I think it is a really harsh decision. Now Chelsea have an absolute mountain to climb
Arsenal 2-1 Chelsea
Danny Murphy
Former Liverpool and England midfielder on BBC One
There's not much in it is there? It's not a yellow card. They have just touched boots!
That's the wrong decision. It's a terrible decision.
Arsenal 2-1 Chelsea
Chelsea's evening goes from tricky to University Challenge levels. They are down to 10 men and midfielder Mateo Kovacic is off for a second yellow.
He does catch Granit Xhaka but it's just a tackle isn't it? Not much in that at all.
Arsenal 2-1 Chelsea
He'd barely been involved in this half you know, Pierre-Emerick Aubameyang. That's what he's all about.
Mind you I went to see him play in Dortmund once and he barly touched the ball and scored a hat-trick past Ederson.
Excluding 'home' games, Pierre-Emerick Aubameyang is only the fifth player to score 2+ goals in a match at Wembley Stadium in club football more than once, after Bryan Robson, Ian Rush, Ian Wright and Eric Cantona.
Arsenal 2-1 Chelsea
Ashley Cole
Former Chelsea and Arsenal defender on BBC One
Chelsea's defence is not up to it at the minute.
Arsenal 2-1 Chelsea
Chris Sutton
Premier League winner on BBC Radio 5 Live
You can see why Arsenal want to keep Pierre-Emerick Aubameyang. It is absolutely genius by Aubameyang. He drifts past Kurt Zouma and dinks the ball over Willy Caballero. It's one of the great goals - an absolute work of art. It's sad Wembley does not have any fans in it.
Arsenal 2-1 Chelsea
The players took drinks after that goal and Andreas Christensen needed treatment after he collided with Hector Bellerin at the end of his barnstormer. What a superb finish.
Can Chelsea respond?
Arsenal 2-1 Chelsea
Alan Shearer
Former Newcastle captain on BBC One
It's exceptional the way he gets in there, turns the defender and the finish is sublime. He is red hot! What a finish!
Arsenal 2-1 Chelsea
Danny Murphy
Former Liverpool and England midfielder on BBC One
Wow! What a finish! What a player!
Nicolas Pepe picks Pierre-Emerick Aubameyang out and he's onside. Look at that dink... He's a world class footballer. We have seen how important it is today for Arsenal to keep him. It's a beautiful, beautiful finish.
Pierre-Emerick Aubameyang (67 mins)
What a brilliant goal! Hector Bellerin takes the game by the scruff of the neck and just charges through the middle. He opens up the whole game and while he's tackled by Andreas Christensen, Nicolas Pepe is able to pick up the pieces and find Pierre-Emerick Aubameyang on the left of the area.
He runs at Kurt Zouma, chops past him with ease and then dinks over Willy Caballero with his left foot.
Two in the semi, two in the final. CLINICAL.
Isthmian League making waves.
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Arsenal 1-1 Chelsea
Neither side has managed a shot on target in this match since Aubameyang's penalty in the 28th minute.
Arsenal 1-1 Chelsea
Just like that...
Mason Mount is clear on the left and without looking just drills the cross into the middle. It's a great ball in but there's nobody gambling on it.