18 Feb '03 23:142 edits

(oh, π that should read "rating problem"..)

My problem is simple:

Say you have a rating of 1400. And there are two games pending, just one move away from your certain defeat (so you could resign).

one opponent has 1200 the other one 1300 - given that your rating at RHP (which is a bit unlucky) is calculated with the point basis at the time you end the game (!), not with the values when you started it.

What game to end first? (in order to choose the least deteriorating order..)

The same problem when you are about to defeat two different opponents.

What and how much changes the difference of their ratings?

Can you guess it? Can you appoximise it? Can you solve the general case analytically? What to do if there are games waiting for the two cases?

(so thats why people tend to let you wait when the game is practically over π)

From the FAQ-section:

Players are rated using the following formula:

New Rating = Old Rating + K * (1 - Win Expectancy)

K is a constant (32 for 0-2099, 24 for 2100-2399, 16 for 2400 and above)

The Win Expectancy is calculated using the following formula:

Win Expectancy = 1 / (10^((OpponentRating-YourRating)/400)+1)

Have fun...

My problem is simple:

Say you have a rating of 1400. And there are two games pending, just one move away from your certain defeat (so you could resign).

one opponent has 1200 the other one 1300 - given that your rating at RHP (which is a bit unlucky) is calculated with the point basis at the time you end the game (!), not with the values when you started it.

What game to end first? (in order to choose the least deteriorating order..)

The same problem when you are about to defeat two different opponents.

What and how much changes the difference of their ratings?

Can you guess it? Can you appoximise it? Can you solve the general case analytically? What to do if there are games waiting for the two cases?

(so thats why people tend to let you wait when the game is practically over π)

From the FAQ-section:

Players are rated using the following formula:

New Rating = Old Rating + K * (1 - Win Expectancy)

K is a constant (32 for 0-2099, 24 for 2100-2399, 16 for 2400 and above)

The Win Expectancy is calculated using the following formula:

Win Expectancy = 1 / (10^((OpponentRating-YourRating)/400)+1)

Have fun...