Usually, instant replay reviews are quick and easy. But not last night in Minnesota.

In a big matchup between two of the best teams in the NHL, the Minnesota Wild trailed the Chicago Blackhawks 2-1 in the second period when Zach Parise lifted a shot over Blackhawks goalie Corey Crawford, appearing to tie the game. However, the Blackhawks challenged the play, arguing that Parise was offsides before putting the puck in the net.

Here’s a look at what the Blackhawks were challenging:

Parise was clearly in the Blackhawks’ zone before the puck entered, meaning that he was offside and that the goal shouldn’t have counted.

However, the NHL's replay war room in Toronto saw otherwise. After a lengthy seven-minute review, the referee announced the replay was "inconclusive" and awarded the goal to Parise.

It appears that the NHL's argument is that you cannot tell the exact moment the puck hits Charlie Coyle's stick.

The Blackhawks would go on to win the game 4 to 3 on a Jonathan Toews goal in overtime.