Category "backtracking"

Pairwise Balanced Incomplete Block Design in C

I have to make a pairwise BIBD in C (using backtracking), but i don't know how to generate the blocks and check for pairs of points I thought I could make a 2d

Solving crosswords efficiently [closed]

I have a crossword puzzle and a list of words which can be used to solve it (words can be placed multiple times or not even once). There is al