Selene Posted January 21, 2011 Share Posted January 21, 2011 Chess board has sixty four (64) squares.Eight (8) by eight (8). Link to comment Share on other sites More sharing options...
Brant Gaede Posted January 21, 2011 Share Posted January 21, 2011 Chess board has sixty four (64) squares.Eight (8) by eight (8).I can do it with six, but that's too easy so my answer is five.--Brant Link to comment Share on other sites More sharing options...
BaalChatzaf Posted January 21, 2011 Share Posted January 21, 2011 Chess board has sixty four (64) squares.Eight (8) by eight (8).I can do it with six, but that's too easy so my answer is five.--BrantSix is the best I can do so far.Ba'al Chatzaf Link to comment Share on other sites More sharing options...
BaalChatzaf Posted January 21, 2011 Share Posted January 21, 2011 Chess board has sixty four (64) squares.Eight (8) by eight (8).Now vary the problem a bit. Identify the top edge with the bottom edge and the left edge with the right edge and you have a toroidal chess board. What is the minimum number of queen required to cover it?Ba'al Chatzaf Link to comment Share on other sites More sharing options...
BaalChatzaf Posted January 21, 2011 Share Posted January 21, 2011 Chess board has sixty four (64) squares.Eight (8) by eight (8).I can do it with six, but that's too easy so my answer is five.--BrantFive will do it. See http://mathworld.wolfram.com/QueensProblem.htmlBa'al Chatzaf Link to comment Share on other sites More sharing options...
Selene Posted January 21, 2011 Author Share Posted January 21, 2011 Five is correct. There is a different configuration in the solve that I have than what Ba'al showed which is WQ1, WQ 4, 5, 6, and 7. For other uses, see Toroid (disambiguation). A toroid using a square. A torus is a type of toroid. Look up toroid in Wiktionary, the free dictionary. In mathematics, a toroid is a doughnut-shaped object, such as an O-ring. Its annular shape is generated by revolving a geometrical figure around an axis external to that figure.[1] When a rectangle is rotated around an axis parallel to one of its edges then a hollow cylinder (resembling a piece of straight pipe) is produced. If the revolved figure is a circle, then the surface of such an object is known as a torus. Link to comment Share on other sites More sharing options...
kiaer.ts Posted January 21, 2011 Share Posted January 21, 2011 Chess board has sixty four (64) squares.Eight (8) by eight (8).Now vary the problem a bit. Identify the top edge with the bottom edge and the left edge with the right edge and you have a toroidal chess board. What is the minimum number of queen required to cover it?Ba'al ChatzafFour. Link to comment Share on other sites More sharing options...
Mike11 Posted January 21, 2011 Share Posted January 21, 2011 I remember a kid's activity book that had this question.I didn't get the answer back then either Link to comment Share on other sites More sharing options...
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