A scoring chance is counted any time a team directs a shot cleanly on-net from within the area where the most goals go in - between and below the circles. You can get a handle on what the scoring chance area looks like here
. Shots on goal and misses are counted, but blocked shots are not (unless the player who blocks the shot is “acting like a goaltender”). Generally speaking, we are more generous with the boundaries of the scoring chance area if there is dangerous puck movement immediately preceding the scoring chance, or if the scoring chance is screened. Tip shots are only counted if they’re obvious sets.