Since the
DAAK members vote in July 2002 the TanHyp System is used for calculating the rating
points.

(TanHyp stands for hyperbolic tangent, a mathematical funktion)

**Description:
- **Nonlinear
pointbased system.

- Works similar to linear pointbased systems:

If you win a game you get a determined number of points, the better your opponnent the more points you can earn.

Your opponent always loses the points you gain.

- If your opponent is equal rated you can win 75 points.

- Maximum are 150 points. (This implements, that the better player would not get any points for a win.)

- Basis is 1000 points

- Difference to linear systems: Since the TanHyp funktion converges slowly to its minimum 0, high rated players get some points for wins against low rated, but only a few.

&xnbsp;(See grafic)

This meets the expectation, because a high rated player will not lose to a newbie very often.

**Formula
**(only
if you are interested in math):

The formula is quite simple, since it has no definition by cases or things like
that

**S = 75
+ 75 * tanh (d/300),**

with

S: points for a win

d: difference of rating points of players (may be negative); d = your rating
points – your opponents rating points

The winner gets the points that are substracted from the loser.

And thats it ! If you want, you can calculate it with a pocket calculator or
Excel.

**Multiplayer
games:
**The
rating of the best player of each team is used.

Average players start with 1000 points, experienced players from other A&A clubs will get 1150 points and total newbies without online experience start with 850 points.