Number Puzzle: Rectangles

A number logic puzzle built around a grid, numbers, and rectangles. Every number tells you the exact area of one rectangle, and your job is to divide the whole board so every region fits. This classic puzzle type is also known as Shikaku.

Each rectangle must contain exactly one number, and the number of cells inside it must match that clue. Rectangles cannot overlap and no cell can be left empty. The challenge comes from comparing possible shapes, ruling out placements, and using the remaining space on the grid.

HOW TO PLAY

• Pick a number on the grid
• Draw a rectangle around it
• Make the rectangle’s area equal to the number
• Keep exactly one clue inside each rectangle
• Cover every cell to complete the board

2000 LOGIC PUZZLES

Start with small, approachable grids and work your way up to larger, more challenging layouts. The rules stay simple while the solutions become more satisfying as you learn to spot possible rectangle shapes and use the remaining space.

GAME FEATURES

• Classic Shikaku number logic gameplay
• 2000 puzzles to solve
• Simple rules with increasingly challenging layouts
• No guessing required — solve with logic
• Clear number clues and colorful rectangles
• Smooth drag controls designed for mobile
• Multiple grid sizes and difficulty levels
• Great for quick breaks or longer puzzle sessions

Every clue tells you the exact size of one rectangle. Use deduction to decide which shape fits, eliminate impossible placements, and gradually fill the grid. A single number may seem simple, but the way all rectangles fit together creates the challenge.

If you enjoy Sudoku, number puzzles, grid puzzles, Nonograms, and other logic games, Shikaku offers a clean and satisfying brain teaser with its own unique rules.

Every number gives you a fixed area. Work out the right rectangle, fit it with the others, and finish the grid.