📁 1. Game Archive
| Item | Details |
|---|---|
| Title | Shikaku (Rectangles / Divide by Box) |
| Genre | Logic Puzzle / Math / Grid Puzzle |
| Platform | HTML5 (Web / Mobile) |
| Host | NetGameX |
| Controls | Mouse Drag / Touch Swipe |
| Core Experience | Deductive Reasoning, Spatial Planning, Math Factors |
| Rating | ⭐⭐⭐⭐⭐ (4.9/5.0) |
📖 2. Detailed Description
"Shikaku" is a classic logic puzzle originating from Japan (Nikoli), sharing the same prestige as Sudoku but focusing on geometry and area.
On a grid scattered with numbers, your goal isn't to write more numbers, but to draw boxes. You must divide the entire grid into rectangular and square regions. This game tests your number sense (specifically factorization) and spatial logic. With no flashy graphics, just clean lines and numbers, it offers a deeply addictive experience for logic purists.
🎮 3. Core Gameplay & Rules
The rules are elegant and simple: "Divide the land, match the area."
Partitioning:
You must divide the grid into multiple rectangles (squares included).
The Number Rule:
One Number Per Box: Each rectangle you draw must contain exactly one number.
Area Equals Number: The number inside the rectangle represents its Area (number of cells).
Example: A box containing the number "4" can only be 1x4, 4x1, or 2x2.
Fill the Grid:
Every single cell on the grid must belong to a rectangle. No overlaps, no empty spaces left behind.
💡 4. Strategy Guide (Pro Tips)
Stuck looking at the grid? Follow this logical chain:
1️⃣ Start with "1" and Primes:
"1" is trivial; it's always a 1x1 box. Lock it in immediately.
Prime numbers (2, 3, 5, 7) are limited because they can't be squares. A "5" must be a long 1x5 or 5x1 strip, significantly reducing possibilities.
2️⃣ Edges & Corners:
Look at large numbers near the borders. If a "9" is in a corner, the walls of the grid limit its expansion options. Often, there is only one valid shape that fits within the boundaries.
3️⃣ Crowding Principle:
If two numbers are adjacent or very close, there must be a boundary line between them. Use this to limit the growth of specific rectangles.
4️⃣ The "Only Neighbor" Rule:
Look at an empty cell far from most numbers. Ask yourself: "Which number could possibly reach this cell?" If only one specific number is close enough to claim it, then that cell must be part of that number's rectangle.
🏆 5. Editor's Choice
"More than a game, it's gymnastics for your brain."
As a representative of hardcore logic puzzles, "Shikaku" earns a perfect recommendation:
Pure Logical Joy: Unlike some puzzles that require guessing or trial-and-error, every move in Shikaku can be derived through pure deduction. Solving the final piece and seeing the perfectly tiled grid provides immense satisfaction.
Math Intuition: It subconsciously trains your ability to visualize factors and areas. It is an excellent tool for keeping your mind sharp or teaching math concepts to kids.
Zen Minimalism: No timers, no noisy ads, just a clean interface. You can sip your coffee and think quietly. It is a peaceful sanctuary for the intellectual gamer.