Author: Bill Gletsos
Date: 23:25:32 11/15/00
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On November 15, 2000 at 23:51:15, Martin Grabriel wrote: >a pawn move that reveals a discovered check ? - that check cannot be a double >check > > >On November 15, 2000 at 20:40:16, Lenard Spencer wrote: > >>This question may probably be best answered by the problemists, but if what I'm >>thinking is correct, it may be possible to make looking for double checks go a >>lot faster than the brute force approach of looking all over the board for more >>than one checker. >> >>Has anybody seen anything written on the subject of what makes a double check a >>"legal" double check? I mean, one that can only happen in the course of a game? >> One example, for a pawn to be involved in a double check (not counting >>promotions), it can only be on a capture, discovering a rook or queen behind it. >> >>I have been looking long and hard at this, and it seems to me (of course I'm >>only a 1250 OTB player) that there are only certain circumstances that will >>allow a legal double check. I would like to locate any material like this to >>see whether I am right or wrong. >> >>Thanks in advance for any help. Martin, Of course it can be a double check. A simple example is as follows: Black king e8 Black pawn d7 White king h1 White rook e1 White pawn e6 White plays e6 x d7 and that is a double check by both the pawn and the rook
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