No.871 (RK&FP)

No.871 
Rainer Kuhn &
Franz Pachl
(Германия)

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Оригинальные задачи, Julia’s Fairies – 2015 (II): июль – декабрь

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No.871 – Rainer Kuhn & Franz Pachl – Богатая стратегия и финальные ходы полунейтральной фигурой, показанные ранее в задачах Франца для 1st Riga Black Balsam TT. (JV)


Определения:

Half-neutral piece: Piece which can exist in black, white or neutral state and changes its state by the rules:

  • A piece in the neutral state may be moved by Black or White, and after move it changes into black or white state respectively.
  • A piece in the white state may be moved only by White, and after move it changes into its neutral state.
  • A piece in the black state may be moved only by Black, and after move it changes into its neutral state.
  • Only a half-neutral pawn can promote into half-neutral figure.

Additional features of half-neutral pieces:

  • Castling with half-neutral King is possible with hK in white phase on e1 (White castling) and hK in black phase on e8 (Black castling). After castling the hK becomes half-neutral phase and can become mate.
  • A play is possible also with only one half-neutral King on the board (in white, black or neutral phase).
  • By the notation: “h”=half-neutral piece, states are marked with “w”(white), “b”(black) and “n”(neutral).

Nightrider(N): Всадник. Линейная фигура (1,2). Играет по прямым линиям с полями, находящимися на расстоянии хода коня друг от друга.


No.871 Rainer Kuhn &
Franz Pachl

Germany

original – 24.08.2015

Solutions: (click to show/hide)

White ka6 qb4 bc7 sf2 pf4g5 Black kf5 ra1h2 sb5 qc6 pa5b3b6e6f3g6 black halfneutral ng2

hs#3            b) Sf2→f6           (6+12)
Half-neutral Nightrider g2


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