Search results
Results From The WOW.Com Content Network
Eight queens puzzle. The eight queens puzzle is the problem of placing eight chess queens on an 8×8 chessboard so that no two queens threaten each other; thus, a solution requires that no two queens share the same row, column, or diagonal. There are 92 solutions.
In computer science, the order-maintenance problem involves maintaining a totally ordered set supporting the following operations: insert(X, Y), which inserts X immediately after Y in the total order; order(X, Y), which determines if X precedes Y in the total order; and; delete(X), which removes X from the set.