Difference between revisions of "Manuals/calci/NQUEENS"

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*2. NQUEENS(6)
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4 Solutions
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==Related Videos==
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{{#ev:youtube|v=0DeznFqrgAI|280|center|N Queens}}
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==See Also==
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*[[Manuals/calci/GENERATESUDOKU  | GENERATESUDOKU ]]
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*[[Manuals/calci/MAGICSQUARE | MAGICSQUARE ]]
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*[[Manuals/calci/BIRTHDAYPROBABILITY | BIRTHDAYPROBABILITY ]]
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==References==
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*[http://www.geeksforgeeks.org/backtracking-set-3-n-queen-problem/  N Queens]
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*[[Z_API_Functions | List of Main Z Functions]]
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*[[ Z3 |  Z3 home ]]

Latest revision as of 13:14, 9 May 2019

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)

1
_|Q|_|_|
_|_|_|Q|
Q|_|_|_|
_|_|Q|_|
2
_|Q|_|_|
_|_|_|Q|
Q|_|_|_|
_|_|Q|_|

2 Solutions

  • 2. NQUEENS(6)
1
_|Q|_|_|_|_|
_|_|_|Q|_|_|
_|_|_|_|_|Q|
Q|_|_|_|_|_|
_|_|Q|_|_|_|
_|_|_|_|Q|_|
2
_|_|Q|_|_|_|
_|_|_|_|_|Q|
_|Q|_|_|_|_|
_|_|_|_|Q|_|
Q|_|_|_|_|_|
_|_|_|Q|_|_|
3
_|_|_|Q|_|_|
Q|_|_|_|_|_|
_|_|_|_|Q|_|
_|Q|_|_|_|_|
_|_|_|_|_|Q|
_|_|Q|_|_|_|
4
_|_|_|_|Q|_|
_|_|Q|_|_|_|
Q|_|_|_|_|_|
_|_|_|_|_|Q|
_|_|_|Q|_|_|
_|Q|_|_|_|_|

4 Solutions


Related Videos

N Queens

See Also

References

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