Τετάρτη, 11 Απριλίου 2012

A quick and easy way to create random Chess960 positions
You will need 6 playing cards for this method.
A




A
2




2
3




3
4




4
5




5
6




6
Step 1 : Using only the first 4 cards (1-4), draw a random card out of them. This is the position of the dark-squared Bishop.
(Let's say we drew the 3)
3




3








1

2

3

4

Step 2 : Repeat the previous step. The new random number is the position of the light-squared Bishop.
(Let's say we drew the 3 again)
3




3








1

2

3

4
Step 3 : Using all 6 cards, draw 3 random cards. These are the positions of the Queen and the 2 Knights.
(Let's say we drew the 2, 1 and 6, in this order)
2




2
A




A
6




6




1
2
3
4


5
6
Step 4 : The remaining empty squares are for Rook, King, Rook, in this order, so that castling is possible.
Congratulations ! You are done !
NOTE : This method ensures that each one of the 960 possible positions have an equal probability to come.
For a method with eight cards but only one draw click here.

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