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This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2001-09-29
 Author: Hans L. Bodlaender. Checkless Chess. No piece may cross a square where it gives check. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Ben Reiniger wrote on 2012-10-06 UTC
Rodrigo, I think the idea is that if after white's move, black's only response will put white in (non-mate) check, then that black move is illegal, so black is in fact in checkmate, and white's move was legal.

Then, what happens if black's only response is to put white in a similar position?  This is the "paradox" that is referenced.

Rodrigo Zanotelli wrote on 2012-10-06 UTCGood ★★★★
"Keller, in his 10th issue of World Game Review mentions the following paradox: what if, say white checks black, such that blacks only move is to check white, but in that position, whites only move is to check black, and so on and so on."
How this would happen in checkless chess? The rules say that you can only mate the enemy king, not check him. In fact this is the main idea of the variant.

Hotmelt wrote on 2012-01-02 UTC
How a player will win in this game, if you cant give check?

Lets say white is in turn 10, he cant check the oponent king. 
So, to white be able mate/capture the king in turn 12, black would need to
make changes the board position, by some movement and/or capture on turn
11, and that would then allow white capture king on turn 12. 
But the problem is: A player cant put his king in check, and so in turn 11
black would not be able to make this movement that put his king in check.

Anonymous wrote on 2007-11-20 UTCGood ★★★★
Sacred King Chess seems like a natural extension of this, and I like it better. Still cool though.

Charles Gilman wrote on 2003-12-28 UTCGood ★★★★
An interesting analysis of a problem of restricted check generally. There are similar issues in multi-player games with rules about checkmate by multiple armies.

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