Shikaku is a Japanese logic puzzle published by Nikoli. You divide a grid into rectangles so that each rectangle contains exactly one numbered clue, and the number equals the rectangle's area (width multiplied by height). Every cell must be covered.

How do Shikaku rules work?

1) Divide the grid into rectangles using click-and-drag. 2) Each rectangle must contain exactly one numbered cell. 3) The number inside each rectangle equals its area (rows times columns). 4) Every cell in the grid must be covered by exactly one rectangle. No gaps or overlaps.

Is Shikaku difficult to learn?

Shikaku is one of the easiest Nikoli puzzles to learn. Start with 4x4 tutorial grids and work up to 15x15 expert puzzles. Key strategy: look for numbers that only have one possible rectangle shape, like a 3 in a corner that must be 1x3 or 3x1.

How many Shikaku puzzles are in this game?

The game includes 35 hand-crafted levels across 4 tiers: 5 tutorial (4x4 to 5x5), 10 easy (5x5 to 7x7), 10 medium (8x8 to 10x10), and 10 hard (12x12 to 15x15). Progress, stars, and best times are saved in your browser.

Play Shikaku Online Free - Rectangle Division Puzzle

Level1

Time0:00

Hints3

Score0

Tutorial (4x4-5x5)L1-L5

Easy (5x5-7x7)L6-L15

Medium (8x8-10x10)L16-L25

Hard (12x12-15x15)L26-L35

Progress: 0/35

Shikaku

Puzzle Complete!

How to Play Shikaku