Shikaku Game

Shikaku Game is a dedicated browser-based platform for playing Shikaku (also known as Divide by Box or Rectangles), the classic Japanese logic puzzle invented by Nikoli. In every Shikaku puzzle, the player is presented with a grid containing scattered numbers. The objective is to partition the entire grid into rectangular and square rooms such that every room contains exactly one number representing its precise area in cells, with no gaps and no overlapping regions.

Shikaku Game provides fresh daily puzzles containing three core boards and two bonus boards every day at 00:00 UTC, perfect for morning mental workouts and casual daily puzzle streaks. For players seeking more practice, the Unlimited mode lets you generate and solve boards across five grid sizes: 4×4, 6×6, 8×8, 10×10, and 12×12. A fast-paced Timed mode challenges solvers to divide grids under countdown pressure. Featuring intuitive drag-and-drop boundary drawing, conflict detection, responsive layouts across mobile and desktop, and zero mandatory sign-up, Shikaku Game is the ultimate destination for rectangle puzzle enthusiasts.