From krazydad, constructor of the wildly popular and addictive puzzles published in The New York Times as Two Not Touch, here are 360 of your favorite Star Batt

Solvers will be over the moon about this huge collection of all-new logic puzzles! Star Battle is a growingly popular logic puzzle that, like sudoku, is simple

A major challenge in constraint programming is to develop efficient generic approaches to solve instances of the constraint satisfaction problem (CSP). With thi

Prepare to be obsessed. Match wits with the experts who created Sudoku. Arranged from “Easy” to “Very Hard,” here are over 300 logic puzzles that celebr

A tale of vengeance, true love, and cannibalism Being born undead can have its disadvantages, such as eternal youth and flawless beauty ---things most unsuitabl