Spireites manager Danny Wilson saluted his side's second-half performance after their four goals confirmed a stunning 4-2 win over Port Vale on Saturday.
Deservedly trailing to Vale at the break, goals from Jamal Campbell-Ryce, Sam Hird, Gboly Ariyibi and Jay O'Shea turned the game on its head and gave the Spireites three crucial points in their battle to avoid relegation.
Wilson explained the stark difference between the two halves: "At half time I stated the obvious, it could have been a defining game of the season today, we didn't want to overstate it but with a win you'd have thought other results could have gone our way, which they have.
"It's not the end of it, but with the game being at home should we not have won it could have been pretty disastrous.
"The moral and the fans would have been disappointed, but the character second half was enormous. The couple of changes we made gave us the impetus that we didn't have in the first half, when we were nowhere near the tempo that we want to play at.
"In the second half it was quite the opposite and I thought that for large periods we made their defence look quite ordinary, and that's what we can do."
The win sees Chesterfield move five points clear of the dreaded bottom four with six games left to play, and Wilson wasn't surprised by his side's potential to play as they did in the latter 45 minutes.
"The ability in the second half didn't surprise me at all," he said. "What surprised me was the first half performance when we didn't turn up.
"The boos at half time I felt were good, they gave us the real kick up the backside that we needed. Some of the players must have thought that if they had a little stroll about everything would be okay, it was quite the opposite.
"After the break we were fantastic and I told the boys after the game that if they're going to perform like that in the second half of every game and win the game like they did then tell me so I don't have to come in until half time."
The full match report can be found and read here