No.805 
Michael Grushko 
(Israel)

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Original Problems, Julia’s Fairies – 2015 (I): January – June

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No.805 by Michael Grushko – A four-men with a final transformation of three neutral Knights into three different pieces! Compare with No.791, where three neutral pawns play with the same combination of fairy conditions. (JV)


Definitions:

Phantom Chess: Any unit except a king may move either normally (from its current square) or as though from its Circe rebirth square if the latter is vacant.

Einstein Chess: All units (Ks excluded) change their type when they move, according to a precise pattern. For non-capture moves: Q>R, R>B, B>S, S>P, P remains P. For capture-moves: R>Q, B>R, S>B, P>S, Qremains Q.

Parrain Circe: After a capture, the captured piece is reborn only after another piece of its own side has moved. The line between capturing square and rebirth square is parallel with and of same direction and length as the move of this other piece. Pawns can be reborn on 1st and 8th rank. From their own base rank, they may move one-step; if reborn on the promotion rank, the Pawn at once promotes, the promotion piece being determined by the Pawn side.


No.805 Michael Grushko
Israel

original – 17.05.2015

Solutions: (click to show/hide)

Black Ka4 Neutral Sc7e6g5

ser-h#5       b) Ka4→h5      (0+1+3)
Parrain Circe
Einstein Chess
Phantom Chess
(no wK)


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seetharaman
seetharaman
5 years ago

I have a question.
In the first solution the move 2.nSc7-d7 according to Phantom Chess is actually a move of this knight from b8 (its rebirth square). So how can the captured nS appear on f6? should it not mimic the move b8-d7?

Geoff Foster
Geoff Foster
5 years ago

The full move is 2.nSc7-b8-d7=nP(+nSf6). The starting square is c7 (not b8), so the rebirth square is correct.

seetharaman
seetharaman
5 years ago
Reply to  Geoff Foster

Thanks Geoff. I see your point. After all the definition says “as if moving from its rebirth square”. So its physical movement is what is relevant.