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Subject: Re: Simulator Shows That Crafty & Ruffian Could Easily Be Equally Good

Author: Graham Laight

Date: 01:50:21 10/15/04

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On October 14, 2004 at 15:19:10, Álvaro Begué wrote:

>You really should study some more math. You don't need to do a Montecarlo
>simulation for this. You can compute the probabilities explicitly with dynamic
>programming, or through generating series (which are the same thing in the end).

Thankyou for providing these one off numbers. However - what I have provided at
http://www.talkchess.com/forums/1/message.html?391362 is an application with the
following features:

* GUI interface - easy and intuitive to use

* anybody with a web browser (which is everybody at CCC) can use it

* up and running in seconds

* variable probabilities for win, lose or draw

* variable number of games in a tournament

That set of features is not bad for a 5kb program that anyone wanting to
investigate these probabilities can use instantaneously any time they want to -
and can use to learn about how these probabilities vary (sometimes
counter-intuitively) with different parameters.

I'm sorry that, because a simulation method is used, you have to wait for
possibly a second or more to get your results.

;-)

-g

>0.0 0.00000000
>0.5 0.00000000
>1.0 0.00000001
>1.5 0.00000011
>2.0 0.00000077
>2.5 0.00000454
>3.0 0.00002253
>3.5 0.00009681
>4.0 0.00036645
>4.5 0.00123913
>5.0 0.00378273
>5.5 0.01051276
>6.0 0.02677871
>6.5 0.06286813
>7.0 0.13665717
>7.5 0.27609578
>8.0 0.52012862
>8.5 0.91614381
>9.0 1.51221011
>9.5 2.34364792
>10.0 3.41589083
>10.5 4.68841893
>11.0 6.06640762
>11.5 7.40617128
>12.0 8.53683462
>12.5 9.29480081
>13.0 9.56183965
>13.5 9.29480081
>14.0 8.53683462
>14.5 7.40617128
>15.0 6.06640762
>15.5 4.68841893
>16.0 3.41589083
>16.5 2.34364792
>17.0 1.51221011
>17.5 0.91614381
>18.0 0.52012862
>18.5 0.27609578
>19.0 0.13665717
>19.5 0.06286813
>20.0 0.02677871
>20.5 0.01051276
>21.0 0.00378273
>21.5 0.00123913
>22.0 0.00036645
>22.5 0.00009681
>23.0 0.00002253
>23.5 0.00000454
>24.0 0.00000077
>24.5 0.00000011
>25.0 0.00000001
>25.5 0.00000000
>26.0 0.00000000



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