Introduction - If you have any usage issues, please Google them yourself
eight Queen's problem is an ancient and famous, is backtracking algorithm typical examples. The question is the famous 19th century mathematician Gauss 1850 : 8 X8 in the lattice placed on the international chess 8 Queen's, making it unable to attack each other. arbitrary or two at Queen's are not the same line, the same series or in the same slash and asked how many pendulum method.