BrainKing - 掲示板 (Chess variants (10x8))

Chess variants (10x8)

Sam has closed his piano and gone to bed ... now we can talk about the real stuff of life ... love, liberty and games such as
Janus, Capablanca Random, Embassy Chess & the odd mention of other 10x8 variants is welcome too

For posting:
- invitations to games (you can also use the New Game menu or for particular games: Janus; Capablanca Random; or Embassy)
- information about upcoming tournaments
- disussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position
... speculation on who has an advantage or the benefits of potential moves is not permitted while that particular game is in progress)
- links to interesting related sites (non-promotional)

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27. ５月 2008, 22:17:17

AbigailII

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件名: Re: castling in Capablanca random chess

mahavrilla:How does one generate an acceptable random position in Capablanca chess without a computer?

I suggest using a standard 6 sided die.

First place all pawns on the 2th (7th for black) row. Then fill the first (eight for black) row using the rules below.

First place the a bishop on a white square using the following technique. Roll the die. If you roll a six, re-roll (keep re-rolling till you don't roll a six). Count that many white squares from the left and place the bishop there. Do the same thing for black squares.

Now we are going to place the queen and the archbishop. One of them has to be placed on a white square, the other on a black square. Roll the die; if you rolled even, the queen goes on white (and the archbishop on black), otherwise the queen goes on black (and the archbishop on white). Roll the die, re-roll a five and a six. Count that many white (or black depending on the odd/even roll) squares from the left, skipping squares containing a bishop, and place the queen. Do the same for the other coloured squares and the archbishop.

You now have six unoccupied squares left. Roll the die. Count that many unoccupied squares from the left. Place the Chancellor on this field.

Roll the die again, re-roll on a six. Count that many unoccupied squares from the left, place a knight here. Roll again, re-rolling on a five and a six. Count that many unoccupied squares from the left, place the other knight here.

You know have three unoccupied squares left. Place the king in the middle of the three. Place the rooks in the remaining two.

This requires at least 8 throws of the die, and 10.1 throws on average.