Fischer random chess numbering scheme: Difference between revisions

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{{Short description|Naming a Fischer Random board using numbers}}

{{Refimprove|date=August 2012}}

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White's starting array can be derived from its number N (0 ... 959) as follows:

'''a)''' Divide N by 4, yielding quotient N2 and remainder B1. Place a '''Bishop''' upon the brightlight square corresponding to B1 (0=b, 1=d, 2=f, 3=h).

'''b)''' Divide N2 by 4 again, yielding quotient N3 and remainder B2. Place a second '''Bishop''' upon the dark square corresponding to B2 (0=a, 1=c, 2=e, 3=g).

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'''c)''' Divide N3 by 6, yielding quotient N4 and remainder Q. Place the '''Queen''' according to Q, where 0 is the first free square starting from a, 1 is the second, etc.

'''d)''' N4 will be a single digit, 0 ... 9. Ignoring '''Bishops''' and '''Queen''', find the positions of two '''Knights''' within the remaining five spaces. Place the '''Knights''' according to its value by consulting the following '''N5N''' table:

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{{DEFAULTSORT:Fischer Random Chess Numbering Scheme}}

[[Category:Fischer random chessChess960|numbering scheme]]