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

Murder Most Puzzling is a gorgeous and witty book that invites readers to play detective and solve a series of absorbing, murder-mystery-themed puzzles. Readers