The Juraj Lorinc Problem is remarkable. I give the diagram only if anyone likes to solve. [img]data:image/png;base64,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[/img] Stipulation: Last move?…
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Interesting to compare with another Valladao composition from more than 20 years ago with the stipulation 'Last move?' - see…
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>> this concept seems to naturally require 15 white men on board. I think so: if one or several officers/pawns…
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Yes, you are right - wPe2 should be on d2.
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In general - no, “rotational” twins are not inferior, of course. But concretely in P0000424, its heavy construction with many…
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Something is wrong, maybe wPe2 should be on d2. This is a type of problem that can be labeled as…
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I meant if a suitable guard could be found for d7.
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@Seetharaman: I don't understand what you mean about shifting d7 to f7. The bPd7 is necessary in order to block…
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Can d7 be shifted to f7?
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However it is a pity that after 1...Kxe7, 2.Qxc5 would not be mate anyway.
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