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MatPlus.Net Forum Retro/Math SPG for beginners :-)
 
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(1) Posted by Siegfried Hornecker [Sunday, Sep 20, 2009 21:44]

SPG for beginners :-)


(= 16+16 )

SPG 11.0
SH, Original

Everyone who can't solve this can't solve any SPG. :-)
 
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(2) Posted by Siegfried Hornecker [Tuesday, Jan 4, 2011 09:05]; edited by Siegfried Hornecker [11-01-05]

Similarly, here's a retro for beginners.

(= 8+3 )

SH, original
Checkmate?


EDIT: Anticipated by Ian Shanahan in Australian Chess, March/April 2007 {No.78}, but in his case with more retro-content.

(= 9+3 )

Checkmate?
a) diagram
b) bQh2
 
 
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(3) Posted by Joost de Heer [Tuesday, Jan 4, 2011 17:52]; edited by Joost de Heer [11-01-04]

Mate
 
   
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(4) Posted by Siegfried Hornecker [Wednesday, Jan 5, 2011 01:06]

The joke in that problem is, while usually the possibility of en passant would have to be proven, here it is proven that en passant is not legal since the last move must have been 1.b3-b4 mate.
 
   
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(5) Posted by Hauke Reddmann [Thursday, Jan 6, 2011 16:16]

Yeah, but is e.g. Kc5 Pb4 Pb5 - Ka5 Pa4 not also mate? ;-)
(By convention, of course.)

Hauke
 
   
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(6) Posted by Joost de Heer [Thursday, Jan 6, 2011 16:20]; edited by Joost de Heer [11-01-06]

Never mind. Don't solve problems at work :).
 
 
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MatPlus.Net Forum Retro/Math SPG for beginners :-)