Hi, I'm Scott -- the person behind Hapraker Press. I build math and logic puzzle books and printable packs (Sudoku, Kakuro, Calcudoku, Futoshiki, with more puzzle types on the way), because a good puzzle should make you think, not groan. Every single puzzle here is checked by computer to have exactly one solution, so there's never any guessing. Thanks for stopping by, and I hope you find something you enjoy solving.