Solves any number of chess queens problem using three different approaches: Combinatory: O(n^n) slowest; Permutations: O(n!); Tree optimized < O(n!) fastest; Generation is performed multi threaded, so all cores of CPU are used, for very...

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Bored of playing 3x3 sudoku?, try Hyper Sudoku - 4x4 challenger version with many features as: each box contains 4x4=16 cells with values 1..9, a..g. Generation of all possible games, (possibly billions), you can stop generation at any time and...

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