Thanks Jacques.. we had this unfinished for several years until Bala found the thematic W1 move.
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Very light setting and nice idea
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though it is thematic
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very nice idea and quite complex, but the useless Sh6 in the 1st solution remains a serious defect
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Thanks Joost. I realised my mistake soon afterwards, but my post has been "awaiting moderation" since then.
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Geoff, the check isn't a double check. Sd6 isn't there, because the twin building of the diagram was wrong.
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Please ignore my previous comment. There is a mistake in the animation and there is no wSd6.
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The twin has a double-check mate and the logic is different. After 3...Rxf6+ the checked white King could escape with…
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Something is wrong with the animation, clicking on "b)" does not show the twin position.
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The link says more precisely that Rex Multiplex applies when a second King of same color appears during the solution...…
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