Queenfest IV: Breaking Free
By Jeff Coakley
Continuing from past columns, we present several new puzzles involving multiple queens. The task is to arrange the queens on the board to achieve certain goals.
A toast to springtime!
For the first puzzle, an ‘edge square’ is defined as any square along the side of the board (a- or h-file, 1st or 8th rank).
Queenfest #11(four queens)
Place four queens on the board so that …
11a. all edge squares are attacked ...
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