## A brief history

The dart game started from the bars in the UK to satisfy the demand for strong, fighting games for men & suitable for indoor conditions ( indoor game) in the second half of the 19th century.

Darts launch is increasingly popular in European countries (England, France, Germany, Netherlands, etc.) & related territories such as USA, Australia. By the 1970s, it became an official sport

## 1. Design for 1 game dart & choose the right standard board

Oche (throw line) is the standing position for a player to throw a dart (according to WDF), away from the dart board including the segments shown in the figure above in British units (feet/inch), including: height 5 feet 8 inches, lengths 7 feet 9.25 inches & curves 9 feet 7.5 inches

Non-standard board with bending iron digits, ratio between parts, order of numbers … is strictly regulated & number 20 (largest) is always at the highest position when hanging on a wall

## 2. The grading method for 501 standard law

There are many variations for the starting number of dart throwing games such as 301, 401, 701, etc. Here, we only mention the classic & most common 501 rules

#### Basic rules

Each player has a starting point of 501 points & how to bring the score to 0 with the least number of turns.

1 throw includes 3 throws.

Finish the game (finish game) must be equal to the 3rd (final) launch & on the double round.

20 arcs corresponding to 20 points

#### How to calculate points for each launch

Bull’s eye: 50 points

Bull’s margin (Bull): 25 points

Double ring: Double the number of points (2 times the number of the arc).

Triple ring: Multiply three points (3 times the number of an arc).

The outer ring triples: 0 points.

Scores are scored in the segments of the division table.

#### Checkout rules to end the game

Must be the last throwing dart.

Must be launched into the double loop (meaning that the number of points left after the 2nd launch must be an even number).

Finish the game by launching the correct double round.

#### Some points to note with the 501 law calculation

The checkout throw will only appear when the remaining score is <170.

The scores 159,162,163,165,166,168,169 cannot go into the checkout throw.

The last throw with the total score greater than the remaining points will not count & must repeat this score by the next 1 throw.

This is a very basic guide on 501 points. In addition, according to the World Dart Federation, there are many other strict rules including how to determine the launcher before & after, the size of each part of the standard board, the thickness of the iron wire; falling, bouncing darts (just launched/previously) off the board, request to change the target, breaking laws & handling, dispute resolution, disability standards, transgender, etc.

If we are amateur players or want to shorten the launch, you can redesign the game with a starting point that can be 201 or more people launching the same starting point.

Above are the basic standard rules to calculate the score in a darting game. Hope the information is useful for you.