By the time Wenger's team next take to the field - against Wigan on Tuesday week - their London rivals will have each played a game more and may be in significantly stronger positions in the all-London top-four fight heading into the final day of the season.
"It's very tight and it's down to the team who makes no mistake," said Wenger, who is enjoying the drama.
"I love it because it's a lot of tension and very exciting. It's demanding as well, because it's not easy.
"We definitely have momentum, if you look at the points we have made compared to two months ago. We are going for it.