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MatPlus.Net Forum Misc Construction task
 
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(21) Posted by Kevin Begley [Sunday, Sep 27, 2009 19:08]; edited by Kevin Begley [09-09-27]

Ahh, the subtle beauty of fairy elements in construction tasks.
Infinite coverage, from a single unit.

How about we add an excelsior.
Place this "non-capturing immune and transparent pawn" on a2, and directmate in infinity.
 
   
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(22) Posted by Joost de Heer [Sunday, Sep 27, 2009 19:21]; edited by Joost de Heer [09-09-27]

Obviously, the board should be 8x8 (the orthodox case can be improved on a 1000x1000 board too). The white king should be present too, and there should be a legal last move. 'Promotion to UU allowed' is a non-acceptable fairy condition, IMO. Any piece promoted to should be present in the diagram. So this requires at least 3 pieces: The white king, the white pawn, and the black UU.

(= 2+1 )

Madrasi, =UU

(last black move was KxUU, Madrasi is only used for legalising the position)
1. ab8=UU# on 60 squares.
 
 
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MatPlus.Net Forum Misc Construction task