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Alice Chess. Classic Variant where pieces switch between two boards whenever they move. (8x8x2, Cells: 128) (Recognized!)
Antoine Fourrière wrote on 2004-11-01 UTC
At both Chess and Alice Chess, the Bishops are restricted to one half of the squares. But at Alice Chess, this holds true also for the Knights, and for the Pawns once they've completed their first move. So you can paint the squares in eight different colors, each color meaning: This square will not accept: 1) the dark-square Bishops (OR the light-square Bishops) 2) the Knights which started on a dark square (OR the Knights which started on a light square) 3) the white Pawns whose first advance was of two squares and the black Pawns whose first advance was of one square (OR the white Pawns whose first advance was of one square and the black Pawns whose first advance was of two squares) This amounts to eight different square types. Something like: 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 5 6 5 6 5 6 5 6 7 8 7 8 7 8 7 8 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 5 6 5 6 5 6 5 6 7 8 7 8 7 8 7 8 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 5 6 5 6 5 6 5 6 7 8 7 8 7 8 7 8 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 5 6 5 6 5 6 5 6 7 8 7 8 7 8 7 8 Or you can have three ways of painting the squares: light and dark as usual, in two colors I'm referring to as B-colors, to separate the Bishops in two classes (1368 vs 2457) reversing the colors of one chessboard, in two N-colors, to separate the Knights in two classes (1467 vs 2358) even-numbered rows of one chessboard and odd-numbered rows of the other chessboard, and vice versa, in two P-colors, to separate the Pawns in two classes (1278 vs 3456) However, a Bishop can be captured only by a Bishop of the same B-color, while a Knight can be captured only by a Knight of the other N-color and a Pawn only by a Pawn of the other P-color.

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