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Contest: the 9 Queens Problem. Put 9 queens and 1 or 2 pawns such that queens do not see each other. Send your solution before Feb 29, and win a book![All Comments] [Add Comment or Rating]
Andreas Kaufmann wrote on Mon, Nov 28, 2005 09:52 PM UTC:
By the way, does anybody tried to solve classical domination and
independence problems for chancellor (rook + knight compound) and
archbishop (bishop + knight). I.e.:

1) Is it possible to setup 8 archbishops on 8x8 board so, that they don't
attack each others?
2) How many archbishops are needed to attack each square on the board?
3) as 1) but for for chancellor (trivial)
4) as 2) but for chancellor (difficult).