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reza: It may not be useless... the position I posted when I started this whole thread 4 months ago has different outcomes if this is considered a valid move or not. Just to bring it back:
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White: Ra5, ph6, Kc3
Black: Kb1, pa6, ph7
White to play, mate in 2
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The proposed solution is
1.Ra5-a5 Kb1-c1
2.Ra5-a1++
And in halma, as rabbitoid pointed out, you can have a move that doesn't change the board at all.
I'm not stating that this should be a valid move or not. I just pointed out what I read in a book, that's all and was wondering for your oppinions. But then again, I remeber a famous game in chess history where someone promoted a pawn to an opponent's piece. And it was considered a valid move at the time since the rules didn't say anything against it (that's why they've been changed *hint**hint*)
(verstecken) Einige Turniere halten Gewinnpreise parat, beispielsweise eine bezahlte Mitgliedschaft oder eine gewisse Anzahl Brains. (JackAwesome) (zeige alle Tips)