Random starting position in chess

The rules

A random starting position in chess is played as the classic starting position but the pieces behind the pawns are placed randomly. This variant was proposed because the players can play from the classic starting position on a lot of moves from memory or repeating previous game, without thinking and without spending time. Thus in the beginning of the game exists equation of players independent from their capacity. These moves are studied in advance in-depth that sometimes a very good player cannot discover into practice. Moreover they place the bases for the future plans of player that are not necessary to discover. Also from cause of deep knowledge of the opening sometimes the game can have very fast final result.

In order to does not exist very drastic change of the game from the classic starting position, the pieces are placed with the following restrictions:

The variant without the limit of symmetry of white to black, with the bishops on opposite-color squares and without castling rights was proposed in 1978 by Maxwell Lawrence named transcendental chess. It implies that this variant includes the classic starting position without castling rights. Because inequalities may arise cause the asymmetry in the starting position, the proposal includes for each player in the same starting position one game with white and one game with black.

If the only restriction that exists is the symmetry whites with blacks, then the starting positions are 5040. If exists the restriction for the bishops it is on opposite color square, then they are decreased in 2880. If the king should be placed in one square between the rooks, then they are decreased in 960. If do not exist the rights for castle, then because the symmetry the starting positions substantially are decreased at the half, that is to say in 2520, 1440, 480 respectively.

The variant with random starting position, with the only restriction the symmetry of whites with blacks, is known from very old. Two games exist in a book of the year 1851. La Régence: journal des échecs, Volume 3, La partie aux pièces déplacées (p. 299-301)

The variant with the 960 starting positions was proposed officially by the former world champion Robert Fischer, on 19 June 1996 in Buenos Aires (Argentina), called "Random Chess". The rules were approved in the 77th Congress of FIDE (World Federation) in Dresden (Germany), November 2008 and were placed in force 1 July 2009.

Draw with equal probability for all starting positions

Fourteen marked cards of three different colors are used.
The first color 4 cards (a, c, e, g).
The second color 4 cards (b, d, f, h).
The third color 6 cards (king, queen, rook, rook, knight, knight).
The cards are shuffled all together and the pieces are setup in the 8 positions (a, b, c, d, e, f, g, h) as follows:
The position of a bishop is a random card of the first color.
The position of the other bishop is a random card of the second color.

1

2

3

4

5

6

a

b

c

d

e

f

g

h

The remaining pieces are placed in the 6 empty positions as the 6 cards appear randomly from the third color.

a

b

c

d

e

f

g

h

If the king must be between the two rooks, then he is swapped with the nearest rook.

a

b

c

d

e

f

g

h

For random generator click here