Difference between revisions of "Manuals/calci/NQUEENS"
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Revision as of 15:21, 26 July 2017
NQUEENS (GridSize)
- is any positive integer.
Description
- This functions creates the N-queens puzzle.
- In , is the size of the row and columns.
- Generally eight queens puzzle is the problem of placing eight chess queens on an 8x8 chessboard so that no two queens attack each other.
- Thus, a solution requires that no two queens share the same row, column or diagonal.
- The eight queens puzzle is a great example of the more general N Queens problem of placing N non attacking queens on an nxn chessboard where solutions exist for all natural numbers n with the exception of n=2 and n=3.
- This function will return the result as "0" when the value of the Grid size is 2 or 3.
- Also this will return as Error when the parameter value is non positive integer.
Examples
1. NQUEENS(4)
1Q|_|_| |
_|_|Q| |
_|_|_| |
_|Q|_| |
2 |_|_|Q|_| |Q|_|_|_| |_|_|_|Q| |_|Q|_|_|
2 Solutions