No.586 (ND&PR)


Nicolas Dupont (Франция)
& Paul Rãican (Румыния)


Оригинальные задачи, Julia’s Fairies – 2014 (II): Май – Август

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No.586 – Nicolas Dupont & Paul Rãican – В этот раз условие Back-to-Back используется в PG задаче! Главной идеей авторов было конструирование Schnoebelen Queens. (JV)


Back-To-Back: Если фигуры противоположных цветов стоят спиной к спине на одной вертикали (белая над черной!), то они меняются ролями. Пешка на первой линии не может двигаться. Любая фигура может сделать en passant взятие, если она получила роль пешки по условию Back-To-Back.

No.586 Nicolas Dupont & Paul Rãican
France / Romania

original – 19.08.2014
Dedicated to T. Wakashima

Solution: (click to show/hide)

white Bf1c1 Ke1 Qd1 Ph2g2f2e2d2c2b2a2 Sg1b1 Rh1a1 black Bf8c8 Ke8 Qd8 Ph7g7f7e7d7c7b7a7 Sg8b8 Rh8a8

PG8,5                                  (15+15)

7 комментариев: No.586 (ND&PR)

  1. Kostas Prentos пишет:

    In my opinion, the presence of two light-squared Bishops for each side is not a flaw. This would be annoying in an orthodox proof game, because one of them would have to be promoted, but with Back-to-Back, it is not the case. Let’s call it a slight inconvenience, because it gives away that at some point, the Bishops moved using Back-to-Back support, but I would not criticize the problem because of that.

    Schnoebelen is a difficult theme in orthodox proof games, but not as much when fairy conditions are involved. Here, there are nice fairy effects to achieve the intended thematic content very economically.

    Is there a specific example showing that Popeye 4.69 still has bugs with the Back-to-Back condition? I can imagine it is unable to test this problem in a limited time, but I hope not because of bugs.

  2. Nikola Predrag пишет:

    7.b2-d4 should be specified.
    Simple and clever motivations for Q-promotions.

  3. Nicolas Dupontdupont пишет:

    As far as I can see, Popeye doesn’t accept a Back-to-Back sequence where a visible unit moved in a fairy way. As an example the 3.5 skeleton is not detected (but is with WinChloe).

    I asked Julia if it is possible to detail the Back-to-Back moves in the solution, e.g. 4.h6-g8=Q. But I don’t know if it is feasible, maybe the animated solution is working only with 4.h8=Q.

    • Seetharamanseetharaman пишет:

      Popeye has bugs when I tried to add the combine Kobulking & Backtoback. Example: white Kd7 black Sf5 Ka8 H#2. Popeye gives no solution, though the solution is 1. Sd6+ Kb6 2.Sb7 Kxb7#

    • JuliaJulia пишет:

      For now Py2Web doesn’t allow to detail moves in the solution, but I’ve added the detailed solution as a comment for now. I hope it will help! (1.h2-h4 f7-f5 2.h4-h5 Sg8-f6 3.h5-h6 Sf6-h5 4.h6-g8=Q! g7-c3 5.Sb1-a3 Bf8-g7 6.Sa3-c4 c3-b1=Q! 8.Bc1-b2 Sh5-g7 9.Bb2*b1)

  4. Seetharamanseetharaman пишет:

    Kudos for showing a the theme impossible without fairy conditions !

  5. Seetharamanseetharaman пишет:

    Kudos for showing a theme impossible without fairy conditions !

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