Allegri insists the Scudetto race is wide open and hailed his Milan firepower.
"Inter earned an important win today, plus there are Lazio and Udinese. It was therefore crucial we win this evening, especially after the Barcelona game when we risked a drop off in concentration levels.
"It's great to keep a clean sheet and we did well to prepare our attack, starting from the full-backs and the midfielders pushing forward into space created by the strikers," he said of the 4-0 win over Chievo.
"I was pleased with the attitude and pressure we immediately put Chievo under."