Originals December 2020

JF Original Problems | December, 2020

The judge of JF-2020/II: Hans Gruber.
The judge of Retro & PG problems 2019-2020: Vlaicu Crișan

Merry Christmas and a Happy New Year 2021 !
My very best wishes to everybody!

(19.12.) Julia’s illness is over! ⇒

  • (31.12) No.1577 (#2 ; PAO, VAO, NAO, RAO, Chinese Camelrider) Jean-Marc Loustau (France). “Double complete Tertiary Threat Correction (TTC), with successive corrections of thematic double threats” (Author) … and much more!
  • (31.12) No.1576 (#3 ; Mars Circe) Armin Geister & Daniel Papack (Germany). “A problem for the New Year’s Eve punch: The same solution – or not…?!” (Authors)
  • (30.12) No.1575 (hs#3) János Csák & Gábor Tar (Hungary).
  • (29.12) No.1551.2 (ser-s#22 ; Circe Rex Inclusiv) Dirk Borst (Netherlands). Correction for No.1551 & 1551.1. “This time I hope to have found a real correction (attached). Both the first and the second cook are impossible in this position. But who knows what Arno will find next!?” (Author)
  • (26.12) No.1574 (hs#3.5) Vitaly Medintsev & Aleksey Oganesjan (Russia). “We have managed to implement probably a NEW idea which might be called ‘Promoted Anticipatory Grimshaw’.” (Author)
  • (26.12) No.1573 (h#3 ; Take & Make, Transmuted Kings) Sergej Smotrov (Kazakhstan). “Echo mates” (Author)
  • (26.12) No.1572 (h#3.5 ; Invisibles) René J. Millour (France). “In this Wenigsteiner using Invisibles, mating by castling occurs twice in a very strange way!” (Author)
  • (26.12) No.1552.1 (h#2 ; Take & Make) Jacques Rotenberg & Pierre Tritten (Israel / France). An improved version to No.1552.
  • (26.12) No.1524.1 (-33 & #1 Proca ; Anti-Circe) Dmitrij Baibikov (Israel). Correction to No.1524 after comment by Bojan Bašić.
  • (26.12) No.1571 (hs#10) Torsten Linß (Germany). “Critical moves by three pieces with return to their original squares.” (Author)
  • (26.12) No.1570 (hs#8.5 ; Neutral pieces ; Alphabetic Chess, PWC, Einstein Chess, Republican Chess) Michael Grushko (Israel).
  • (25.12) No.1569 (h#2.5 ; Neutral pieces ; Anti-Circe) Manfred Rittirsch (Germany). “Soul Sacrifice”
  • (25.12) No.1568 (h#2 ; Brunner Chess, Back-to-Back) Karol Mlynka (Slovakia).
  • (25.12) No.1567 (hs#4 ; Anti-Andernach, Mars Circe) Igor Kochulov (Russia). Enjoy the order of promotions!
  • (25.12) No.1566 (hs#3.5 ; LEO, NAO) Franz Pachl (Germany).
  • (25.12) No.1565 (h#2 ; Breton Adverse) Thomas Maeder (Switzerland). Glad to see Thomas on JF again, after previous publication back in 2015, No.897.

Animated diagrams use Py2Web by Dmitri Turevski and WinChloe‘s graphics, Christian Poisson


Fairy Classification: Leapers Evolution! and more…

What happens in our Going Forward to Light and Order project?  While I haven’t followed the project for about 3 weeks, the team was continuously  discovering new highlights and new questions as well. Tonight I couldn’t provide any summary of the current situation, but let me show you some moments jumped into my eyes. Later on the members of the team might comment something more, and of course, all of us would appreciate your comments (and joining to the team as well! 🙂 )

Shankar always makes some nice graphical presentations for us. So, I’d like to share something with you:

I did a small analysis of the way Leapers evolve into Riders, Hoppers and other related types. This scheme generates 116 different pieces – some of them possibly not yet used and/or named!

Note: the 116 pieces are generated from only the 3 basic leapers: Wazir, Fers and Wazir+Fers(Erlking). Another 63 can be added with the Knight evolving into Nightrider/Rose, N-Hopper, Nao, N-Lion, etc. Adding up to 179 Pieces!”

See more! ⇒

Of course, the discussion goes in different directions, and can go continuously deeper and deeper, as Vlaicu commented:
Human imagination has actually no limits! 🙂

But allowing some more imagination to ourselves, we still have to do some practical work to push the results to appear.

What we need to do immediately is make a selection of some popular elements belonging to each of the main groups and fill out the intended details like history, popularity, supporting software and example problems to put into a publicly viewable and searchable database on JF. This will give some immediate benefit and feedback. We can then fine tune our work to improve it further.” (Shankar)

Thanks a lot to everybody involved!