Ozil tapped in a fourth befire Chesnakov lashed in for Vorskla
Mesut Ozil made Arsenal four to the good, before minutes later Vorskla got one back through a great Chesnakov strike.
Arsenal controlled the game after the first goal from Pierre-Emerick Aubameyang, before Danny Welbeck doubled the lead just after half time.
The former Dotmund striker neatly made it 3-0 to Arsenal, making the home side slow the pace of the game a bit.
Their avantage was made even great when Stephan Lichsteiner lifted a ball in to box, for Mesut Ozil to find himself with an easy tap in.
Just three minutes later, after a free-kick for the away side, the ball fell to Vorskla captain Volodymyr Chesnakov.
The full-back got the ball out of his feet and lashed the ball in to the top corner past a helpless Bernd Leno.