Solving fairy proof games: “Jacobi” by François Labelle

Dear retro friends,

I would like to introduce “Jacobi”, a new program that can solve fairy proof games. The home page is at http://wismuth.com/jacobi/ . The program is a web app that runs in your browser and requires no installation.

read more…

I hope that you find it useful! – François Labelle


Originals 281017

 

J’F

Original Problems

 

28th of October, 2017

The day of retro problems! 🙂

  • (28.10) No.1245.1-5 – Andreas Thoma (-N/#1; Proca Retractor; Anticirce Cheylan). A selection (PDF) of 5 Proca Retractors with Anticirce Cheylan condition with the same idea. For the competition I’ve assigned numbers to original problems from No.1245.1 to 1245.5.
  • (22.06) No.1244.1-15 – Andreas Thoma (-N/#1; Proca Retractor; Anticirce Cheylan). A selection (PDF) of 15 Proca Retractors with Anticirce Cheylan condition, each using not more than 4 pieces on the board was presented by Andreas and published on 22.06.2017. For the competition I’ve assigned numbers to original problems from No.1244.1 to 1244.15.
  • (28.10) No.1146.1 – Paul Rãican (PG 17; Masand). The version to No.1146, published after the end of tournament but before the award is made, accepted by the judge of PG/Retros 2015-16 Thomas Brand.

Animated diagrams use Py2Web by Dmitri Turevski and WinChloe’s graphics.


All previously published problems you can find in the subsections of Original Problems menu on the top. The judge of JF-10/2017-3/2018 is not appointed yet. The judge of Retro & PG problems 2017-2018: Dirk Borst


Czechoslovak Republic 100 JT

announce on the occasion of the 100th anniversary of the Czechoslovak Republic

International anonymous chess composing jubilee tournament

Czechoslovakia 100

Sections: a) Mate in 2 moves b) Helpmate in 2 moves c) Symbolic composition without any limitation of stipulation and conditions, which in any way evokes the 100th anniversary of the establishment of the Czechoslovak Republic → see PDF announcement

Closing date: 30.06.2018 | Announcement of results: 28. 10. 2018 – 100th anniversary of the founding of Czechoslovakia


Originals 17;231017

 

J’F

Original Problems

 

17;23rd of October, 2017

Thanks a lot to Shankar Ram, who kindly updates the list of problems of the current tournament,  JF-10/2017-3/2018!

I haven’t appointed yet the judge for the current period, but glad to announce the future judges: 

  1. JF-2018/II, 01.07-31.12.2018: Kjell Widlert
  2. JF-2019/I, 01.01-30.06.2019: Michal Dragoun
  • (23.10) No.1243 – Peter Harris (h=2; Sentinelles PionAdvers, TransmutedKings, Circe Super, Isardam).
  • (17.10) No.1242 – Ľuboš Kekely & Ladislav Packa (h#2.5; Anti-Circe, Transmuted kings). Why Anti-Circe is better than Circe here?..

Animated diagrams use Py2Web by Dmitri Turevski and WinChloe’s graphics.


All previously published problems you can find in the subsections of Original Problems menu on the top. The judge of JF-10/2017-3/2018 is not appointed yet. The judge of Retro & PG problems 2017-2018: Dirk Borst


Originals 02-091017

 

J’F

Original Problems

 

2-9th of October, 2017

  • (09.10) No.1241 – Vito Rallo (h#3; Circe Parrain).
  • (05.10) No.1240 – Dmitri Turevski (hs#5.5). Two solutions – two maneuvers!
  • (04.10) No.1239 – Hans Peter Rehm, Kjell Widlert & Klaus Wenda (#9; Nonstop-Equihopper, Leo, Pao, Vao, Grasshopper, Rookhopper, Wazir). “The interchange of places “there and back again”…”
    Warm welcome to Hans Peter Rehm in Original problems section of JF!
  • (02.10) No.1238 – Georgy Evseev (h#2; Leo, Camel, Giraffe). I like the dedication to the Baltic Sea.. and the incoming waves on the top of the board.

Animated diagrams use Py2Web by Dmitri Turevski and WinChloe’s graphics.


All previously published problems you can find in the subsections of Original Problems menu on the top. The judge of JF-10/2017-3/2018 is not appointed yet. The judge of Retro & PG problems 2017-2018: Dirk Borst