🧩 Jigsaw Sudoku (Irregular Sudoku)
How to Play:
1. Fill digits 1–9. Each row and each column must contain unique digits.
2. Thick bold outlines mark 9 irregular regions (jigsaw pieces). Each region must also contain digits 1–9 exactly once.
3. No 3×3 boxes — the irregular shapes replace standard boxes.
4. Wrong digits turn red instantly; completed rows/columns/regions glow pale gold.
1. Fill digits 1–9. Each row and each column must contain unique digits.
2. Thick bold outlines mark 9 irregular regions (jigsaw pieces). Each region must also contain digits 1–9 exactly once.
3. No 3×3 boxes — the irregular shapes replace standard boxes.
4. Wrong digits turn red instantly; completed rows/columns/regions glow pale gold.
Ready for a Sudoku variant that completely rewires your spatial logic? Jigsaw Sudoku (also called Irregular Sudoku) replaces the standard 3×3 boxes with 9 wobbly, puzzle-piece shaped regions — same 1–9 rule, totally new deduction patterns.
🧩 The Core Twist
Rows and columns still work exactly like classic Sudoku. But instead of neat 3×3 boxes, thick bold lines mark out 9 irregular connected regions. Each region must also contain digits 1–9 exactly once.
Switch between different layout shapes above for fresh challenges every time.
Rows and columns still work exactly like classic Sudoku. But instead of neat 3×3 boxes, thick bold lines mark out 9 irregular connected regions. Each region must also contain digits 1–9 exactly once.
Switch between different layout shapes above for fresh challenges every time.
Why Players Love Jigsaw Sudoku
- Fresh spatial logic — breaks your classic Sudoku autopilot
- Great for pattern recognition — trains your eye to track irregular groups
- Multiple layouts — 3 different region shapes for endless replay value
Click any cell, use the number pad to fill in digits, and watch wrong answers turn red instantly. Completed rows, columns and irregular regions will glow gold to track your progress. Good luck!
Tags: jigsaw sudoku, irregular sudoku, sudoku variants, free sudoku, logic puzzle
Share this challenge with your friends!Two brains are better than one!
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