A quick and easy way to create random Chess960 positions
You will need 6 playing cards for this method.
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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
♣ |
♣
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♣
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♣
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♣
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♣
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♣
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♣
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♣
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♣
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3
♣ |
♝
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1
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2
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3
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4
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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
♣ |
♣
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♣
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♣
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♣
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♣
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♣
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♣
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♣
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♣
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3
♣ |
♝
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♝
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1
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2
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3
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4
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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)
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♞
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♛
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♝
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♝
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♞
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1
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2
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3
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4
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5
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6
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Step 4 : The remaining empty squares are for Rook, King, Rook, in this order, so that castling is possible.
♞
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♛
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♜
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♚
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♝
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♝
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♜
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♞
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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.