The Gunners were on a terrible run in the Premier League having lost four away games on the trot going into their match with Middlesbrough on April 17.
But ahead of the fixture Wenger had his team experiment with a new system, which featured three defenders instead of a typical four, on the training ground.
And he bravely put it to the test at the Riverside stadium, where his revitalised Arsenal side ran out 2-1 winners.
Wenger stuck with the system in their FA Cup semi-final against Man City and watched as his side booked a place in the final.
Speaking to Arsenal Media, the Frenchman admitted he was “surprised” his players adapted to the style of play so quickly.
He also attempted to explain why the system has seen his side put a stop to their woeful run of form as they look to get their season back on track.
“I’m surprised how quickly we adapted to the system. We worked on it in training but we had limited time.
- Jose Mourinho says Manchester United ‘cry’ for Zl0:23
- Wenger reacts to Alexis Sanchez’s controversial y2:01
- Eugenie Bouchard says Maria Sharapova shouldn’t b0:45
- Anthony Joshua works out ahead of Klitschko fight0:38
- Arsene Wenger speaks after win over Leicester6:38
- Borussia Dortmund celebrate win over Bayern Munich0:34
Arsene Wenger speaks ahead of Arsenal v Leicester City
“And well, I think it gave us a bit more security in a period where we need a bit more certainty and more clarity with our defending.
“Maybe as well the new system suits some individual players to express their qualities and gives them some freedom to go forward. Overall, I feel until now it’s worked well.
“The most important thing is more team spirit and that’s why I insist that we have to transfer that into the Premier League.”
Arsenal currently sit seventh in the table, seven points outside the Champions League places but with a game in hand over Man City in fourth.