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Sorry I didn't see the question and reply sooner. The white rook is felt through the black rook. Specifically, the white rook on c8 defends the white queen on f8, even though the black rook on d8 is in the way. --Fritzlein 02:50, 27 Jun 2004 (UTC)
The x-ray is a good thing to know, but I did not feel it showed it clearly enough. I added the second image to show the position after 2. Qf8+ where the x-ray is most clear. The variations in black's play are not illustrative given the topic at hand so I removed them, I hope that doesn't offend, I just felt that the point here is to illustrate the x-ray attack, not cover alternate moves possible and why they were not any good. The x-ray attack is subtle to chess novices and I think the second image and the additional discussion added makes it very clear. erislover
Would not the best move be to exchange the rooks to avoid this, or is this what the mistake of the novice would be? -Avochelm 12:16, 4 August 2005 (UTC)[reply]
Exchanging rooks was the line that erislover deleted in the interests of clarity (I understand the reasons for doing so, but I wonder if it's going to cause more confusion than englightenment; perhaps it's better to find a "cleaner" example of the X-ray which doesn't have such sidelines?). The line is question is: 1.Rc8 Rxc8 2.Qe7! Qxe7 (if 2...Qc6 3.d8Q+ is neatest) 3.dxc8Q+. --Camembert13:01, 4 August 2005 (UTC)[reply]
The alternate lines can get pretty complicated, but since someone asked about it almost immediately after I removed it, I guess it was best to have it in. In that case, I have tried to be thorough. It still strikes meas distracting, but these are the compromises that must be reached. Players advanced enough to see the possibilities without mentioning it would already know the x-ray attack anyway, so the alternate lines do make sense in that light. Erislover 15:43, 4 August 2005 (UTC)[reply]
My question is: Why didn't Black King move to h8 instead of h7? How is h7 a better move than h8? Or is either move as checkmate-able as the other? Thank you. bananaketchup (talk) 06:38, 21 February 2009 (UTC)[reply]
I un-redirected it, restoring the supported usage, and deleting the usage that is, as I had indicated by my fact (citation needed) tag, unsupported. Krakatoa (talk) 01:08, 18 March 2009 (UTC)[reply]
I will have to check and see if I have that book (I'm not at home now). That is very interesting, since it supports the controversial meaning of the term - one piece supporting a friendly piece through an enemy piece. That meaning was in the original version of the article, but no one could find a source to support it. As you'll recall, Quale (understandably) was insistent that without a source for that meaning, it had to go. This is an important tactical concept, and one that is sometimes hard to see. Another, flashier example is IM Andrew Whiteley-Dunn, London 1989, a big upset apparently: 1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.a3 Qh4 5.Be3 Bc5 6.Qd3??? Nxf2 0-1 Krakatoa (talk) 21:05, 27 April 2009 (UTC)[reply]