Who's on the ice
Six per side: five skaters (usually three forwards and two defensemen) and a goalie. Players change on the fly every 40–60 seconds, in groups called lines.
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Goal line & net. The whole puck has to cross this thin red line, between the posts, for a goal.
Crease. The blue half-circle in front of the net is the goalie's space. Bumping the goalie there can wipe out a goal.
Faceoff circles. Play restarts with a faceoff at one of nine dots: the ref drops the puck between two centers.
Blue lines. They split the ice into three zones and decide offside: attackers can't enter the attacking zone before the puck.
Center red line. Halfway line. Shooting the puck from your own half all the way past the far goal line is icing.
Neutral zone. The middle ice between the blue lines, where possession usually gets fought over.
A regular-season game
OT and the shootout only happen if the score is tied after 60 minutes. The clock stops at every whistle, so a game takes about 2½ hours.
Six per side: five skaters (usually three forwards and two defensemen) and a goalie. Players change on the fly every 40–60 seconds, in groups called lines.
A goal counts when the whole puck crosses the goal line. Up to two teammates who touched it before the scorer get an assist.
For a player, “points” means goals + assists. That's different from team standings points.
Tied after three periods? In the regular season it goes to 5 minutes of sudden-death 3-on-3. The first goal wins.
Still tied after OT: three shooters per team go one-on-one against the goalie. If it's still level, it goes to sudden-death rounds. The game is credited as a 1-goal win.
No shootouts in the playoffs. Teams play full 20-minute 5-on-5 periods until someone scores, sometimes deep into the night.
A team trailing late often swaps its goalie for an extra skater to attack 6-on-5, risking an empty-net goal against.
32 teams play 84 games each, from October to mid-April. They split into two conferences (Eastern and Western) of two divisions each, eight teams per division.
Standings are sorted by points. A record is written W-L-OT: 10-5-2 is 10 wins, 5 regulation losses and 2 overtime/shootout losses, worth 22 points.
When two teams have the same points, the NHL looks at these in order:
Late in the season you'll see letters by team names: x clinched a playoff spot, y the division, z the conference, p the best record in the league (Presidents' Trophy), e eliminated.
16 of the 32 teams, 8 per conference: the top 3 in each division, plus 2 wild cards per conference. Those are the next-best teams by points, whichever division they're in.
The Divisions tab shows this live: the red line under 3rd place is the division cut, and the dashed line on each rink is the wild card cut.
Four rounds, every one a best-of-seven: first team to four wins moves on. The better seed gets home ice in games 1, 2, 5 and 7.
The winner lifts the Stanley Cup, the oldest trophy in North American pro sports.
One conference's bracket (A and B are its two divisions)
An attacker can't cross the opponent's blue line before the puck does. If they do, play stops and there's a faceoff outside the zone. Coaches can challenge a goal that followed an offside.
Shooting the puck from your own half past the opponent's goal line, without anyone touching it, is icing. The faceoff goes back to your end and your tired players can't change. A team killing a penalty is allowed to ice it.
When a player goes to the penalty box, their team plays a man short. The other team is on the power play; the short team is on the penalty kill. A goal by the short team is a shorthanded goal.
A raised ref's arm means a delayed penalty: play goes on until the guilty team touches the puck, so the other team pulls its goalie for an extra attacker.
Three goals by one player in a game. Home fans throw their hats on the ice to celebrate. Seriously.
The penalty box clock
The same explanations you get by hovering or tapping a dotted-underlined stat anywhere on the site.