Ravensburger is one of the best jigsaw puzzle brands available and one of the few I always look to buy when there's a sale.

As a fan of both Harry Potter and puzzles, I have taken it upon myself to help you find the right Potter puzzle for you. Below I've gathered some of my favorite adult jigsaw puzzles with a Harry ...

Abstract: This paper introduces new types of square-piece jigsaw puzzles: those for which the orientation of each jigsaw piece is unknown. We propose a tree-based reassembly that greedily merges ...

At the time of Ulysses S. Grant's election to the presidency, white supremacists were conducting a reign of terror throughout the South. In outright defiance of the ...