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Old March 28th 14, 12:59 AM posted to rec.games.chess.analysis
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Default Perpetual Check

Is Perpetual Check in the Chess rules, or is it really a subset of the
3-move repetition draw?
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Old March 31st 14, 01:45 AM posted to rec.games.chess.analysis
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Default Perpetual Check

SmaÚg wrote:
Is Perpetual Check in the Chess rules, or is it really a subset of the
3-move repetition draw?


Perpetual check without repeating the position sounds like a challenging
and probably interesting task for problem composers.

Supposing such a position could be found though, the resulting play
would eventually come up against the 50-move rule.
abc
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Old March 31st 14, 08:14 AM posted to rec.games.chess.analysis
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Default Perpetual Check

On 31/03/2014 01:45, abc wrote:
SmaÚg wrote:
Is Perpetual Check in the Chess rules, or is it really a subset of the
3-move repetition draw?


Perpetual check without repeating the position sounds like a challenging
and probably interesting task for problem composers.

Supposing such a position could be found though, the resulting play
would eventually come up against the 50-move rule.
abc


Provided that a capture can be made every 49 moves the theoretical limit
for such a game can be made quite a bit longer.

I wonder what is the longest perpetual check puzzle position?

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Old March 31st 14, 05:57 PM posted to rec.games.chess.analysis
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Default Perpetual Check

Martin Brown wrote:
On 31/03/2014 01:45, abc wrote:
SmaÚg wrote:
Is Perpetual Check in the Chess rules, or is it really a subset of the
3-move repetition draw?


Perpetual check without repeating the position sounds like a challenging
and probably interesting task for problem composers.

Supposing such a position could be found though, the resulting play
would eventually come up against the 50-move rule.
abc


Provided that a capture can be made every 49 moves the theoretical limit
for such a game can be made quite a bit longer.


Exactly, captures and pawn moves, by black or white, plus repeating
positions twice as often as possible, but never three times. But they'd
run out eventually.

I wonder what is the longest perpetual check puzzle position?


The sort of thing one would expect to read about on Tim Krabbé's
website, but afaik that particular problem has not been addressed there yet.
abc

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