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Задача 367: Janos Mikitovics - Fairy (Swapping Kings, Einstein Chess, Anti Koeko)

mikitovics(21.03.2014) Феерирна задача Танагра с комбинация на три феерични условия от Janos Mikitovics.





367

1.Kf6 Bh7=S+ (Kf6⇔Kf4) A 2.Ke4 Bd6=S(Ke4⇔Kf6)# B

1.Kf7 Bd6=S+ (Kf7⇔Kf4) B 2.Kg5 Bh7=S(Kg5⇔Kf7)# A


Swapping Kings: When the side on-move checks the opposite King, the Kings change places. This is known as the “swap”. A swap is mandatory. The legality of any checking move is evaluated after the swap, except in certain cases involving castling. Castling out-of–check is illegal (wKe1 wRh1 bKe8 bBa5, 1.0-0??). Castling through check is illegal (wKe1 wRh1 bKf8 bBa5, 1.0-0??). Castling into-check is legal (WKe1 WRh1 BKf8 BBa7, 1.0-0!) A King swapped back to its game-array square is considered “reborn” and is eligible to castle.

Einstein chess: every time a piece moves (without capturing), it "loses energy" and transforms itself ("is demoted") into a smaller unit, one step down the ladder from Queen to Rook to Bishop to Knight to Pawn. Every time a piece captures, it gains energy and   transforms itself ("is promoted") into the next bigger unit. Kings do not transform. A capturing Queen-move or a non-capturing   Pawn-move does not lead to any transformation.There are no promotions. So that you can have pawns on the 8-th rank   (where they are stuck). You can also have pawns on the 1st-rank (after a non-capturing Knight move): these pawns can make a single, double  or triple step forward. After a double or triple step,   they can be captured en-passant by an enemy pawn on the 3rd or 4th rank.   After a triple step, en-passant capture can take place on two different squares!

Anti KoKo: the move is legal only if the arrival square is not in contact with another piece.

 

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