No.1329 (AT)

Andreas Thoma (Германия)

Оригинальные сказочные задачи
июль – декабрь’2018

Определение: (показать/спрятать)

No.1329 Andreas Thoma

original – 30.09.2018
dedicated to Christian Poisson

Solutions: (click to show/hide)

white Kd4e6 Sd6 Bg6 Pd5 black Qd8 Bf8 Rh6

ser-#3         b) Sd6→d5             (5+3)

11 комментариев: No.1329 (AT)

  1. Nicolas Dupontdupont пишет:

    Sorry but I don’t understand why solution a) ends in a checkmate position. After Rh6xBg6 the bK is no more in-check, so why isn’t it a valid defense?

  2. Seetharamanseetharaman пишет:

    Is the twin right?

  3. Nicolas Dupontdupont пишет:

    The link says more precisely that Rex Multiplex applies when a second King of same color appears during the solution…

    I wasn’t aware of that kind of illegal move in RM. It looks debatable, in fact I don’t understand why Rh6xBg6 should be a check, as the black side doesn’t threat to capture both wKs!

    • Juraj LörincJuraj Lörinc пишет:

      There are various possibilities for treatment of multiple kings, as Francois rightly points. Actually three of them mentioned by him lead to different verdicts about 3…Rxg6:
      – Rex Multiples allows only checks that either can be parried without any king left in check or checkmate all kings. In Rex Multiples 3…Rxg6 is illegal as it checks Ke6, but White is unable to parry it without leaving some its kings under check.
      – Siamese Kings allows any check and consider as checkmates checks that cannot be parried in a manner leaving all kings unchecked. In Siamese Kings 3…Rxg6 would checkmate White.
      – Royal Dynasty considers as check only attack at the last Kings standing, thus 3…Rxg6 would parry the check to Black and even did not check White.

  4. Geoff Foster пишет:

    The twin has a double-check mate and the logic is different. After 3…Rxf6+ the checked white King could escape with 4.Kd5. However 3…Rxf6+ is illegal because the black King is still in check from the wSd6.

  5. Geoff Foster пишет:

    Please ignore my previous comment. There is a mistake in the animation and there is no wSd6.

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