The victory at Sunderland on Saturday kept the Gunners' hopes of a top-four finish alive, although they remain four points adrift of arch-rivals Tottenham after their 2-1 home win over the Mags.
Arsene Wenger: "We were under pressure to win, and of course we could not afford to drop points.
"I said that after the Chelsea game, we are in a situation where we cannot drop points any more. No matter where we play, we need the three points.
"We lacked efficiency in our finishing, we didn't finish what we created. But we create, and that's positive.
"Sometimes, it's like that. If you look at our games, we score five, seven and suddenly sometimes none, because maybe this team is developing and learning and needs to be a bit more efficient."