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Shakashaka

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🏠 Heyawake 🎨 Suguru 🏙️ Skyscrapers 🔗 Slitherlink

Shakashaka Game Guide

📖 About

Play Shakashaka, also called Shaka Shaka Puzzle, free online. Place corner triangles around numbered black cells so every remaining white region forms a rectangle. This browser version needs no download and includes instantly playable logic puzzles.

🎯 Objectives

Place triangles so that all white (unshaded) areas form perfect rectangles, and satisfy all clue numbers.

🎮 How to Play

Click cells to place triangles in corners. Each white area must form a perfect rectangle. Black clue cells show how many adjacent triangles surround them.

⌨️ Controls

Click a cell to cycle through: empty → triangle (4 orientations) → white. Right-click to mark cells as definitely white.

⚙️ Game Mechanics

  • ▸ Place triangles in the four corners of cells
  • ▸ All white areas must form rectangles
  • ▸ Black clue cells indicate adjacent triangle count
  • ▸ Triangles cannot create 2×2 all-white areas

✨ Features

  • ★ Multiple grid sizes
  • ★ Auto-check for valid rectangles
  • ★ Highlight non-rectangular areas
  • ★ Undo/redo functionality

💡 Tips

  • ✓ Look for areas that can only be one shape
  • ✓ Use clue cells to determine triangle placements
  • ✓ Rectangles can be any size, including 1x1
  • ✓ Check that white areas don't form L-shapes

❓ Frequently Asked Questions

What makes Shakashaka unique?
The goal is to create rectangles from white areas. Unlike most puzzles, you're not filling cells but strategically placing triangles to corners to shape the remaining space.
How do triangles work?
Triangles fill half of a cell diagonally. When placed, they reduce the white space, forcing it to form rectangles rather than irregular shapes.
What do the clue numbers mean?
Black clue cells show how many triangles are orthogonally adjacent to them. Use these to deduce where triangles must be placed.
Can I leave cells white?
Yes! White cells are often necessary to complete rectangles. The challenge is knowing where to place triangles versus leaving cells white.
How do I know if a white area is a valid rectangle?
A valid rectangle has four straight sides and four right angles. If a white area has an L-shape, T-shape, or any irregular boundary, you need to place more triangles to clean it up.
Can I play Shakashaka free online?
Yes! Play Shakashaka free in your browser on Free Games Hub — no download or sign-up. 100+ levels from beginner to expert.

Strategy Guide

Want to master Shakashaka? Read our comprehensive strategy guide with expert tips and techniques.

Read Full Guide
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Part of Collection

Japanese Logic Puzzles - Nonogram, Slitherlink, Shakashaka, Tapa

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