$4$ points

$Rc,$

We consider a modified $6-$Queens problem. The chessboard is with $66$ squares with two black ones. Each black one can block any attach if it is between two queen either horizontally, vertically, or diagonally. Please use backtracking approach to place the $6$ queens so that no any pair attach each other. You only need to provide two solutions for the $6$ queen placement $($use $$ far $$ queen in the chessboard$).$

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