This particular toy example's suitability for distributed computing

[zougloub]

Since this is a Red Hat repository, I would advocate to insist on the fact that effective algorithms should be candidate for distributed computing, to minimize "environmental unfriendliness".

It should be noted that a backtracking algorithm such as Jan Sipke van der Veen's is not the fastest at finding Yasumi exact cover solutions (but it can find other solutions). So much that the performance of Knuth's DLX algorithm is much faster (the 9356 solutions are found in 36 Gcycles / 8 seconds on 1 core of my laptop).