Ryuhei Uehara

This chapter explores anti-slide puzzles, a class of packing puzzles in which pieces placed inside a container mutually block one another and become globally

This chapter introduces matching puzzles, a family of puzzles in which adjacent edges, colors, symbols, or patterns must satisfy prescribed compatibility

This chapter investigates overlapping puzzles, a class of puzzles in which multiple transparent or similarly shaped pieces are stacked in essentially the same

This chapter examines silhouette puzzles, a classical genre of dissection puzzles in which given polygonal pieces must be assembled into specified shapes. The

This chapter introduces several classic number puzzles, focusing on missing-digit puzzles, cryptarithms, and the popular Make 10 puzzle. Beginning with famous

This chapter introduces a wide variety of pencil-and-paper puzzles, emphasizing their accessibility, mathematical structure, and algorithmic depth. Beginning

This chapter explores the history, mathematics, and computational aspects of sliding block puzzles. Beginning with famous examples such as the Dad puzzle and