Anticirce plus Circe in the defensive retractor

Click to read the article in PDF, 5 pages

Günther Weeth (1935-2020) himself had prepared this translation of his article published in Die Schwalbe 306-2/2020. p.821 ff. in November 2020 in German language. We have made some small adaptions replacing examples 5&9 with new versions as the Schwalbe-originals had turned out to be incorrect. However the original source of those versions is “Die Schwalbe 2020, version 2021”.
K.Wenda, A.Thoma

…So far my first explorations in the ”new territories”.
I hope I could draw the attention of retro-experts on the combination AntiCirce + Circe inspiring them to continue my studies.
Günther Weeth /Stuttgart, November 2020/

In memory of Günther Weeth

In memory of Günther Weeth

(13 August 1935 – 28 December 2020)

By Klaus Wenda (Vienna, Austria)

On 28 December 2020, Thomas Brand’s Retro-blog featured truly sad news: Günther Weeth had died after a long and severe disease.

Günther Weeth became a member of Die Schwalbe, the German association for Problem chess, in 1973 and earned his first spurs as a strong solver. Due to the friendship with retro specialist Josef Haas, his interest in retro analysis awoke. The traditional Christmas solving tourneys of the newspaper “Stuttgarter Zeitung”, widely known by an international problem solving audience, offered him the perfect arena to thrill, or sometimes exasperate, the participants with his witty and tricky riddles.

-> see more / less…

Since the summer of 2020, Günther intensively worked on a new project, the defensive retractor with the conditions AntiCirce+Circe. He presented the results of his analysis, decorated with some quite original problems, in an article in Die Schwalbe, 306-2/2020, pp. 821-824. Günther still translated the piece into English before his passing. It is expected to be published in Julia’s Fairies soon.

My sincere sympathies go to Günther’s family, especially to his wife Gudrun, who always appreciated his time-consuming hobby, problem chess. An eminent problemist left Caissa’s World – and I have lost a good friend.

3 problems by Günther Weeth: G.W. – König & Turm 2011 | G.W. – StrateGems 2016 | K.W. & G.W. – Die Schwalbe 287/2017

Vienna, January 2021

Klaus Wenda

Problems by Günther Weeth published on JF 2015-2019: No. 885 | 1223 | 1261 | 1322 | 1357 | 1440

Originals January 2021

JF Original Problems | January 2021

The judge of JF-2021: not appointed yet.
The judge of Retro & PG problems 2021-2022: not appointed yet

  • (24.01) No.1524-2 (-34 & #1 Proca ; Anti-Circe) Dmitrij Baibikov (Israel). Correction of No.1524 (JF-R2019-20). No.1524 & 1524.1 are withheld from the tournament JF-R2019-20.
  • (24.01) No.1578.1 (#3 ; Anti-Circe) Daniel Papack & Sven Trommler (Germany). The improvement with thematical tries for No.1578, Dedicated to Franz Pachl 70th birthday.
  • (22.01) No.1580 (h#4 ; Transmuted Kings) Ľuboš Kekely (Slovakia).
  • (09.01) No.1579 (h#2 ; Madrasi) Manfred Nieroba & Daniel Papack (Germany). Warm welcome to Manfred!
  • (08.01) No.1578 (#3 ; Anti-Circe) Sven Trommler (Germany). Dedicated to Franz Pachl 70th birthday.

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

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!

Originals November 2020(2)

JF Original Problems | November, 2020(2)

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

Coming soon: nobody in the waiting list…

  • (30.11) No.1564 (hs#4) János Csák (Hungary) & Aleksey Oganesjan (Russia). Attractive sacrifices lead to ODT “model checks” and model mates.
  • (28.11) No.1563 (h#4 ; Grasshopper) Niels Danstrup (Denmark). An interesting coincidence about the numbers: the previous problem by Niels was No.1553 on the date 28.10!
  • (26.11) No.1562 (h#4 ; Functionary Chess) Oleg Paradzinskij (Ukraine). Warm welcome to Oleg!
  • (24.11) No.1561 (h#2 ; HurdleColourChanging pieces, Lion, Rook-Lion, Rose-Lion) Michal Dragoun (Czech Republic). The problem is not computer-tested – I found firstly geometrical pattern and then I discovered, that neither Popeye nor WinChloe are able to test Andernach roselion…(Author). Important to note two different names for the same property: Andernach hoppers = HurdleColourChanging pieces.

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

Going Forward to Light and Order!

Going Forward
to Light and Order!

by Shankar Ram

Our chess problem field is not gaining as many new followers as it should. There is a competition for ways to spend leisure time: various other board and video games – most of them available online, as well as the old ways like music, movies, serials, sports – again mostly online. Also, the regular game is experiencing a boom, with more OTB and online tournaments. But here too, players are less interested in chess problems, than before.
In this atmosphere, we should try to make our hobby as attractive as possible for newcomers. The biggest area in chess problems is the category of fairy chess. Here, more and more new forms are being invented. The easy availability of chess problem solving software is probably helping in this. But this has created a big obstacle for the newcomer, who might well be scared away by the plethora of incomprehensible terms under the diagrams!
Therefore, this project is an attempt to provide an easy and helpful way for a newcomer to find the definition of an unfamiliar fairy element, as well as some additional information about its history, popularity, software supporting this element and of course, some carefully selected example problems which bring out the characteristics of the element.

In the process of this project, we need to classify the various elements into groups and sub-groups, along with linkages between similar elements – in short, produce a taxonomy or knowledge organisation of fairy chess elements. This will aid understanding, meet the human need for orderliness, and help to check whether a particular element is already existing.

Of course, various sources are available online, many of which meet the above objectives. These have been used as the basis or foundation for this project. All of them have been listed and acknowledged. However, all of them have some shortcomings in terms of completeness, being up-to-date, clarity, example problems and organisation. Our project is an attempt to address all these shortcomings.

We welcome all comments and suggestions!

A great work to classify fairy elements has been already done mostly by Shankar Ram and Chris Tylor! (Julia)

Originals November 2020

JF Original Problems | November, 2020

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

Coming soon: nobody in the waiting list…

  • (16.11) No.1560 (PG 9 ; Nanna Chess) Gregor Werner (Germany). Warm welcome to Gregor!
  • (15.11) No.1559 (s#7 ; Circe) Ivan Bryukhanov (Ukraine). Welcome back after 8 years break! 😉
  • (15.11) No.1558 (PG 2.5, 7-fold checkmate ; Add pieces, KoBul Kings, Make&Take) Pierre Tritten (France). Just an empty board?! (no animation)
  • (15.11) No.1557 (hs#2 ; Grasshopper, PAO, VAO) Georgy Evseev & Boris Shorokhov (Russia). Welcome to solve!
  • (06.11) No.1556 (hs=3 ; AntiCirce) Gábor Tar (Hungary). „Anticice pin” on the same square.
  • (06.11) No.1551.1 (ser-s#21 ; Circe Rex Inclusiv) Dirk Borst (Netherlands). Correction to No.1551: bPe7 is added to correct the cook found by Arno Tüngler and Kjell Widlert
  • (06.11) No.1525.2 (h=10.5) Anatoly Stepochkin & Sergey Shumeiko (Russia). Improvement to No.1525.1: same idea, but nicer solution.
  • (03.11) No.1555 (hs#3.5) János Csák & Gábor Tar (Hungary). Warm welcome to János!
  • (02.11) No.1554 (hs#4) Vitaly Medintsev (Russia). ODT model mates and something more to discover…

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

Fairy Classification, step 1: sources and more…

Fairy Classification project: step 1

Our Fairy Classification project has started, motivated by the great enthusiasm and good will of Chris Tylor and Shankar Ram! Now our small group is moving from the Preliminary questions  to the next steps. The main ideas of this post are :

  • to inform everybody what we currently do;
  • to get your comments/suggestions about the current steps;
  • to involve more members to our working team.

On this first step we’re very grateful to:

If anybody still feels himself enthusiastic about our project – please, join us! Your suggestions and info about sources, classification, fairy definitions, historical facts, etc, may help a lot!

Originals October 2020 (2)

JF Original Problems | October, 2020 (2)

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

Coming soon: nobody in the waiting list…

  • (28.10) No.1553 (h#3 ; Grasshopper ; Take & Make) Niels Danstrup (Denmark). “I have made some ChessProblems back in 1977 and 1978 (!), and have started again in 2020. – Welcome back and to JF!
  • (27.10) No.1552 (h#2 ; Take & Make) Jacques Rotenberg & Pierre Tritten (Israel / France). “Paradoxical specific play…”
  • (27.10) No.1551 (ser-s#21 ; Circe Rex Inclusiv) Dirk Borst (Netherlands). I’ve got used to see Dirk’s name on JF while he was a judge of Retro&PG problems (JF-R2017-18)  and absolutely surprised now to see this is the first Dirk’s problem I publish on JF! Is it possible at all? 😉 Warm welcome, Dirk!

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