# No.480 (ND)

 No.480 Nicolas Dupont(Франция) Оригинальные задачи, Julia’s Fairies – 2014 (I): Январь – Апрель   →Предыдущая ; →Следующая ; →Список 2014(I) Пожалуйста, присылайте свои оригинальные сказочные задачи на: julia@juliasfairies.com

No.480 – Nicolas Dupont  – Сложная PG задача со сказочным условием Back Home, открытым автором! Задача будет участвовать в отдельном Конкурсе Ретро и PG задач, опубликованных на Julia’s Fairies в 2013 – 2014.  (JV)

Определение от автора:

Back-home:
a) If a piece can legally move to the square it occupied in the initial position of the problem, it must move to this back-home square.
b) Back-home moves are prevalent to the virtual capture of the opponent King by any piece, i.e. “checks are fairies”.
c) If several back-home moves are legal, the side-on-move chooses which one to play.
d) The back-home square of a Pawn which is promoted during the solution is the initial square of this Pawn.
See the link http://juliasfairies.com/ru/articles/back-home-fcondition-ndupont/  for more details on the back-home fairy condition.

 No.480 Nicolas Dupont France original-06.01.2014 Dedicated to Jacques Dupin   PG 21,5                                     (15+15) Back Home      Solution: (click to show/hide)     1.f2-f4 e7-e5 2.f4-f5 Qd8-g5 3.f5-f6 c7-c6 4.Sg1-h3 Qg5-h4 + 5.Sh3-f2 Qh4-c4 6.Sf2-e4 Ke8-d8 7.Se4-d6 Kd8-c7 8.Sd6-f5 Bf8-c5 9.Sf5-e7 d7-d6 10.Se7-g6 h7-h5 11.Sg6-f8 Rh8-h6 12.Sf8-h7 Rh6-g6 13.Sh7-f8 Bc8-e6 14.Sf8-d7 Be6-d5 15.Sd7-b6 a7-a5 16.Sb6-c8 Ra8-a6 17.Sc8-a7 Ra6-b6 18.f6xg7 Sb8-a6 19.Sa7-b5 + Kc7-b8 20.Sb5-d4 Rg6xg7 21.Sd4-f3 Sg8-e7 22.Sf3-g1   Thematic content: The white side is entirely home-based while no black officer is standing on its initial square. Capture-free circuit of 18 moves (over 22!) by the white Knight g1. The motivation of the circuit is to allow black officer’s moves with cancellation of their back-home obligations. This proof game is fully computer tested with the next Popeye’s release (version 4.64). (Author).

### 5 комментариев: No.480 (ND)

1. seetharaman пишет:

Very nice thematic content. It is a real surprise to see that all black men can be outside their original squares despite the Back-Home condition!

• seetharaman пишет:

I doubt if it can be done in a shorter PG. You have used only 5 moves extra ! The white knight circuit is a great addition to the main idea.

2. dupont пишет:

Thanks! It could be a nice challenge to construct a back-home proof game as short as possible, where none of the 16 officers are standing on their initial squares in the diagram position.

3. Jacques Dupin пишет:

Thank you very much Nicolas ! Many (all of them?) methods used to avoid returns. One can also note a nice cameleon-echo for the Rooks… Bravo!

• Kjell Widlert пишет:

There are other subtle methods to avoid returns – but still a very fine and clear proofgame!