Talk:Generate Chess960 starting position: Difference between revisions

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(→‎random starting position: Random: Now any one of 960.)
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This would make a good extension to the requirements to verify that the programming examples being used to create a random Chess960 starting position do indeed produce all possible starting positions. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 05:42, 8 May 2014 (UTC)
This would make a good extension to the requirements to verify that the programming examples being used to create a random Chess960 starting position do indeed produce all possible starting positions. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 05:42, 8 May 2014 (UTC)


:Modified task description to force entries to be able to produce one of the 960. --[[User:Paddy3118|Paddy3118]] ([[User talk:Paddy3118|talk]]) 05:52, 8 May 2014 (UTC)
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Revision as of 05:52, 8 May 2014

clarifying wording

In the first rule, the wording states   ··· all eight pawns must be placed on the second rank.

There are sixteen pawns.

How about   A player's eight pawns must be ···   or something similar. -- Gerard Schildberger (talk) 04:53, 8 May 2014 (UTC)

random starting position

A trivial REXX program (of two statements): <lang rexx>if random(0,1) then say 'NBQRBKNR'

               else say 'QBNRBKNR'</lang>

would, in the strictest sense, fullfill a random Chess960 starting position   (albeit only two random positions).

However, I believe the spirit of the requirement of random be that the random position would produce any of the 960 possible starting positions. -- Gerard Schildberger (talk) 04:53, 8 May 2014 (UTC)

relevant :-) --Grondilu (talk) 05:49, 8 May 2014 (UTC)

To this end, I wrote a REXX program (2nd programming entry) that randomly generates all possible unique 960 Chess960 starting positions and it shows a log of the results (unique starting positions) after each one-thousand generations.

This would make a good extension to the requirements to verify that the programming examples being used to create a random Chess960 starting position do indeed produce all possible starting positions. -- Gerard Schildberger (talk) 05:42, 8 May 2014 (UTC)

Modified task description to force entries to be able to produce one of the 960. --Paddy3118 (talk) 05:52, 8 May 2014 (UTC)