The Fading Chessboard

Ser-h#2

Fading chessboard

Ka2 Transmuting King

Bf4 Royal piece

I would propose a new fairy condition: the fading chessboard. After every move, if this move is not a mating move, the chessboard shrinks (all the pieces on the disappeared squares disappear themselves): the 8x8 chessboard becomes a 6x6 one (along the diagonal b7-g2), then a 4x4 (diag. c6-f3), until 2x2: the chessboard is now made up of four squares, d4, e4, d5, e5. At every stage, the chessboard mantains its features: the promotion is possibile on the last line of the enemy's field (but the promoted piece, if it is not the mating piece, will immediately disappear), and the pawns can move two square forward from the second line.

The diagram above (an exercise thet does not have the dignity of a problem) has this "solution": 1. Kb3 2. Kc4, d6=N #.

Of course, many rules of this condition could be modified: e.g., the chessboard could fade row by row (from 1 or 8), column by column (from "a" or "h"), and even square (or group of squares?) by square. Maybe, another, and related, fairy condition could be interesting: with every move, the square by which the move has begun, disappears into nothingness. It looks funny.