Easy Clone Sudoku

Shaded regions are clones — identical in digit content and position. One placement updates all its clones simultaneously.

Easy Medium Hard Expert

New to Clone Sudoku? Clone A and Clone B must mirror each other exactly — place a digit in one and it locks the same position in the other. Start here.

8
3
2
6
1
9
9
4
3
5
7
8
2
7
8
1
3
2
7
1
9
7
2
1
4
6
6
7
5
8
2
8
1
6
9
2
7
4
Clone A Clone B Both regions must have identical digits
Mistakes
0/3
Score
-
Time
00:00
Try Medium Clone Sudoku →
Progress0%

What is Clone Sudoku?

Difficulty
★★★★☆
4/5
Constraint Type
Clone Regions
Typical Givens
24–32
Avg. Solve (Easy)
10 min

Solving Techniques for Easy Level

Technique Description Level
Clone Pair Deduction Any digit placed in one clone region immediately forces the same digit in the corresponding cell of the other clone region. Beginner

Ready to go deeper? Try Medium Clone Sudoku to unlock Intermediate techniques.

Techniques to Master at Easy

  • Last Remaining Cell technique — Each deduction lands twice — placing a digit in one clone region instantly fills its twin cell, often completing a unit on the far side of the grid.
  • Last Possible Number technique — A clone cell obeys its own row, column, and box plus its twin's — intersect both cells' eliminations and the shared candidate list shrinks twice as fast.

Average Solve Time by Difficulty

Easy
10 min
Medium
22 min
Hard
42 min
Expert
72 min
Want a full walkthrough of rules, strategies, and solving steps? How to Play Clone Sudoku →

Related Variants

Chaos Construction

Structure-as-puzzle taken to the limit: instead of mirroring known regions, you deduce where the regions even are.

Jigsaw Sudoku

Region-shape reading without the mirroring — nine snaking regions replace the standard boxes.

Diagonal Sudoku

Like clone cells, diagonal cells link distant parts of the grid — placements echo far beyond their own box.

Frequently Asked Questions — Easy Clone Sudoku

What is Clone Sudoku?
Clone Sudoku is a variant where two highlighted regions — Clone A and Clone B — must contain identical digit arrangements. Corresponding cells in both regions hold the same digit. Standard Sudoku rules for rows, columns, and 3×3 boxes still apply.
How do the clone regions work?
Clone A (outlined in amber) and Clone B (outlined in purple) are two groups of cells that must mirror each other exactly. If cell 3 of Clone A contains a 7, then cell 3 of Clone B must also contain a 7.
Do rows and columns still matter in Clone Sudoku?
Yes. All standard Sudoku constraints are in effect: every row, column, and 3×3 box must contain each digit 1–9 exactly once. The clone constraint is an additional rule on top of these, not a replacement.
How do I start solving an easy Clone Sudoku?
Find cells that are already given in one clone region and immediately transfer that digit to the corresponding cell in the other clone. These free placements often unlock chain reactions through standard row, column, and box eliminations.
Can Clone Sudoku have more than two clone regions?
The puzzles on this site use two clone regions (A and B). Some Clone Sudoku variants elsewhere use three or more clone groups, but the core rule is always the same: mirrored regions must contain identical digit arrangements.

More questions? See the full Clone Sudoku guide.