This time out, the biennial tournament returns to Europe for the first since 2015. It will be hosted by the Gleneagles PGA Centenary Course in Perth & Kinross, Scotland.

Gleneagles also becomes the first British venue to host the tournament since it was staged at Loch Lomond Golf Course in Scotland in 2000.

The women’s equivalent of the Ryder Cup, the tournament’s format has changed several times since the Solheim Cup first took place in 1990.

Since 2002, however, it has settled on the same system in use in the Ryder Cup, consisting of 28 matches spread over three days.

Here’s what you need to know about the format and scoring system.

How does the Solheim Cup work?

Similarly to the Ryder Cup, the Solheim Cup consists of 28 matches played over three days, under three different types of match play—fourballs, foursomes and singles.

Fourball and foursome matches are scheduled for Friday and Saturday, while the 12 singles matches will take place on Sunday.

A total of eight players from each team take part in the fourballs and the foursomes, while each player from Team Europe plays against an opponent from Team USA in the singles.

The choice of eight players competing in the foursomes and fourballs is entirely up to the two captains.

How does the scoring system work?

The scoring system for the Solheim Cup is different from everyday golf and follows the same rules in use for the Ryder Cup.

Each victory is worth one point, with the point halved if the match ends in a tie. There are 28 matches, meaning the first team to reach 14.5 points wins the Ryder Cup. Should the two teams score 14 points each, Team USA will retain the trophy as it is the current holder.

In the fourballs two players from each team play together against the other team, with each player playing their own ball. The better score of the two golfers in a team determines the team’s score on a particular hole and each hole is won by the team whose individual golfer has the lowest score.

The foursome matches, meanwhile, see two golfers from Team Europe face two players from Team USA, with team members alternating between shots and each team using one ball. Each hole is won by the team that completes the hole in the fewest shots.

The singles, meanwhile, are a standard competition between two golfers and the winner is whoever has the lowest score.