Ramsey scores twice, second a brilliant flick, also hits post
Lacazette also bags brace, including penalty after Ozil fouled
Golovin briefly brings CSKA level with superb free-kick
Three other last-eight ties, inc. Atletico Madrid v Sporting
#bbcfootball or 81111 on text
While we get started, we want to know if you agree - is Arsenal's season all about the Europa League now?
Should Arsene Wenger be resting players in the Premier League to keep them fit for Europe?
Let us know using #bbcfootball on Twitter or by texting 81111 (if you're in the UK, and please let us know your name).
Arsenal v CSKA Moscow (20:05 BST)
Image source, EPAArsenal's first European quarter-final since 2010.
Potentially five games away from lifting the Europa League - and clinching a Champions League spot for next season.
Some 13 points behind fourth-placed Spurs, the Gunners' season is much more likely to hinge on these European matches than the final seven Premier League games.
Welcome to live text coverage of Arsenal v CSKA Moscow in the Europa League quarter-final first leg.