No.300
Michel Caillaud (France)

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Original Problems, Julia’s Fairies – 2013 (I): January – April

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Please send your original fairy problems to: julia@juliasfairies.com


DSCN3274-cropNo.300 – Michel Caillaud – A very beautiful problem, an excellent realization of Pelle theme with model mates!! 
My gratitude to the author for dedication to the 1st Birthday of Julia’s Fairies! (JV) 


Definition:

LEO(LE): Moves as Queen, but captures only by hopping over a hurdle to any square beyond.


 
No.300 Michel Caillaud
France
original-15.04.2013
Dedicated to the 1st Birthday of Julia’s Fairies!
 
300-h#3-mc
h#3              2 solutions         (1+9+4)
Neutral LEO e5
 
 
Solutions: (click to show/hide)
 

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Seetharaman
Seetharaman
7 years ago

Very nice battery transformations and line effects including bristols! Great problem ! But modes mates?

Seetharaman
Seetharaman
7 years ago
Reply to  Julia

You are right Julia. I wrongly noticed a double guard for some other square (not d5, the black king square). Apologies to the author.

Nikola Predrag
Nikola Predrag
7 years ago
Reply to  Julia

“But mates here are impossible without double checks.”
Hm, this is not a precise explanation. If the only mate is a double check this does not mean that a double-attack on the King is needed, it could be accidental.

In Michel’s mates, the double attack on wK is needed because both Leo and Queen are neutral. If the Queen was not neutral but white then the check by nLE would not be needed. Still, these mates would not be possible without double-checks. The necessary flights-guard by nLE would cause the UNnecessary double-check.

This might seem as an unimportant detail, but it has confused experienced composers.

Mr. Petkov’s wording is more precise: “…the triple check is needed for the mate!”

Petko A.Petkov
Petko A.Petkov
7 years ago

Of course, Julia is right. Model mate is possible even in a position where we have triple check! For example:

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1. nRxf5 (nNf1) # – Model mate through the triple control over the square d5!! It is obviously here, that the triple check is needed for the mate!