The Embassy

Introducing the Mystery Scoring System.  This is a name that reflects that the actual points scored isn't known until the tournament is over. OK, enough.  Let's get to it.  Here's a breakdown of what the system looks like. The Mystery scoring system The Mystery scoring system is based on DIAS games, where all survivors share in the draw.  (I have modified it to work with non-DIAS games.) In a draw , all players involved in the draw score 100  points. For games which are non-DIAS, players that survive but who are not part of the draw receive 10 points. Eliminated players receive 0 points. If a game ends in a solo, all other players receive 0 points. Solos are scored using the following process: Find the sum of all points scored in games which end in a draw. Divide this total by the number of games that ended in the draw - the average number of points awarded. Divide the average number of points above by the number of games that ended in a...

Before I move on to look at my suggestion for a scoring system I want to summarise the problems with scoring systems that are out there already.  If we can work out what is wrong with them, we can use this to design a system that might address these problems. When I first started playing on online I remember raising a question: Why are draws scored equally? Why isn't the number of supply centres you hold at the end of the game taken into account? The answer that came back from a site mod was along the lines of the argument I use now.  At the end of a game of Diplomacy you have achieved one of three results: you've won, you've drawn, or you've lost.  If you've won, then you get all the points in the game.  If you've drawn, it doesn't matter what number of SCs you've finished the game on, the result is the same.  If you've lost... well. At the time, that site used a game result system to score games: 12 points for a win 6 points for a 2-wa...

There are, perhaps, three other types of scoring system: Placement or Rank scoring, hybrid systems that seek to combine DSS and SCS, and Tier scoring systems.  I want to have a look at each system. Placement or Rank systems Essentially, these are Supply Centre Scoring systems with the addition of bonus points.  I'm going to have a look at some more regularly used systems.  Again, here is the map I will use as an example: England  - 12 SCs Russia  - 9 SCs Turkey  - 8 SCs Italy  - 5 SCs France ,  Germany   and  Austria-Hungary   were eliminated, with 0 SCs each. C-Diplo In a drawn game points are awarded for: Participating in the game: 1 (for an online tournament, I'd only award this for participating and not surrendering). Each SC held at the end of the game: 1 . The player that 'tops the board' (has the most SCs): 38 pts. The second placed player (second highest number of SCs): 14 pts. The third p...

The thing with tournaments is that a lot of games end in a draw.  This means that DSS systems aren't necessarily going to produce a great result because a lot of players could well finish on the same score.  An alternative to DSS is a  Supply Centre Scoring  (SCS) system. I'm going to use the game above as an example to explain SCS systems.  (The game is from Playdiplomacy and so the colours are different from those I use for my maps.)  The game ended with the following outcome: England - 12 SCs Russia - 9 SCs Turkey - 8 SCs Italy - 5 SCs France , Germany and Austria-Hungary were eliminated, with 0 SCs each. Supply Centre Scoring systems are based on the number of SCs the players owned at the end of the game.  The basic pattern is: A solo results in all the points available.  No other player scores points. A draw will be scored using the number of SCs the players hold at the end of the game.  In the above game, on ...

If we're looking to score Diplomacy games based on the rules of the game, there are just three outcomes: a win, a draw, and a loss.  A scoring system based on these outcomes would therefore be based on whether the game was won, or whether it ended in a draw.  These systems are called Draw Size Scoring systems (DSS). The basic model for DSS systems is: The result is based on how the game ends only. If you win the game outright (solo), you take all the points in the game. If you are part of the draw at the end of the game, you receive the points avaialble in the game divided by the number of players in the draw. If you lose the game, you receive 0 (zero) points. The most basic version of this is the Calhamer Point system, designed by the great and good ABC himself.  If you soloed, you earned a point.  If you drew the game, you scored a number of points based on how many people you drew with.  So a 4-way draw would provide 0.25 points, a 5-way draw 0....

As I mentioned in the first post in this series , if you're playing in a tournament, you're playing a variant of Diplomacy.  This must be kept in mind when we're evaluating scoring systems.  The games are already variants so having them scored just means the variant aspect is increased. However, the scoring system should change the nature of the game as minimally as possible.  Ideally, even in the context of the variant you are playing - whether that variant is that the game is part of a tournament only, or whether it's being played online - the scoring system should try to meet the objectives of Diplomacy, not alter them. Objectives of Diplomacy The objective of the game is to win.  This means owning 18 SCs. If the game is unlikely to end in a solo victory, then the surviving players can end the game in a draw.  This means that players should be looking to survive in most cases, and certainly to be in a position to be part of the draw. Draws Inc...