No.1577
Jean-Marc Loustau
(France)

Original Fairy problems
JF-2020-II:
01.07.2020 - 31.12.2020


Definitions / Определения


No. 1577 Jean-Marc Loustau
France
original - 31.12.2020

White Sf8 NAa7 NAb7 Rg7 Ph7 Pb5 Sd5 RAg5 Pc4 Pd4 Pc3 Sd3 NAa2 Kg2 Rh1 Black VAc8 VAd8 Bg8 CHh8 PAf7 Bc6 Pd6 CHg6 VAh6 Pe5 Ph5 Kg4 VAh4 VAf2 NAb1 CHc1
#2                       15+16
VAO c8, d8, h6, h4, f2
PAO f7
RAO g5
NAO a7, b7, a2, b1
Chinese Camelrider h8, g6, c1

Solution: (click to show/hide)


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Thomas Maeder
Thomas Maeder
January 1, 2021 09:24

A Rao g5 seems to be missing in the diagram.

NB: Happy new year everybody!

shankar ram
shankar ram
January 1, 2021 11:34
Reply to  Thomas Maeder

Also, h8 is a Chinese Camelrider. And the left facing Knights are all Naos.

shankar ram
shankar ram
January 1, 2021 13:13
Reply to  shankar ram

g6 also needs to be a Chinese Camelrider.

shankar ram
shankar ram
January 1, 2021 15:43
Reply to  shankar ram

As does c1!

shankar ram
shankar ram
January 1, 2021 15:54

Another multi-line extravaganza from Jean-Marc!
A doubling of Tertiary Threat Correction and Hannelius themes by using double threats, topped off with mate transference, flight giving key, Stocchi style quadruple avoidance after self blocks, unpinning defences and a truly surprising threat after the key!
The outlier WSf8 makes the flight giving a little bit less surprising and the plug on c1 is unfortunate. But the content is truly sumptuous!
A “line-diagram” is attached.

Loustau-1577-JF-20201231.png
shankar ram
shankar ram
January 1, 2021 15:54
Reply to  shankar ram

And a “pattern-table”.

Loustau-1577-JF-20201231-sol.png
Georgy Evseev
Georgy Evseev
January 2, 2021 12:14

Just a reminder.

In the threat of the solution the “mate” is based on the idea that the black king serves as both hurdle and aim on the circular Rose path.
There is no consensus on this issue. For example, Popeye does not allow this.

shankar ram
shankar ram
January 2, 2021 12:47
Reply to  Georgy Evseev

That’s why I called it a “truly surprising threat”!
WinChloe allows it.

Joost
Joost
January 7, 2021 14:56
Reply to  Georgy Evseev

In the code for roses (pieces/walks/roses.c IIRC), there’s an attempt by Thomas to fix this, but the code doesn’t compile at the moment.

Jean-Marc Loustau
Jean-Marc Loustau
January 7, 2021 00:48

I just see a mistake in the last point of my comments (in solution): it should be:
“The set play and 2nd try (1 RAf3?) show a half-Ruchlis”; sorry for this mistake…
Thank you Julia for your great work and Shankar for your nice comments!