Martinez believes ‘many aspects and many concepts’ are really coming together.
“It’s been a learning process,” he told Sky Sports. “Game by game you can see many aspects and many concepts that they are coming together.
“What they showed today (Saturday) is that they are hungry for success, they are ready to work really hard for each other. That’s what they want to do and they deserved that sort of performance.
“It’s a key moment for our history. The fans deserve this moment, they push us and they support us throughout.
“I think the understanding and the concentration levels were fantastic. It’s not that we had one or two key moments in the game – I felt that from the first minute we showed a great determination to win the game and we fully deserved that.
“There are reasons why we won and we have to make sure we understand them and carry on using them.
“We were getting into great positions time after time in the last third.
“Many times we had one-on-one situations and two-on-two situations and that’s very hard to find against a very good Chelsea side.
“But all in all I would say the key moment was that when Chelsea scored our concentration levels never changed.
“In the past we have had problems with our belief in carrying on doing exactly the same when we go a goal behind or we had a disappointment.
“I think that was key in our performance.”