How to Solve Sudoku — Level 2

Difficulty: Medium 5 recorded solutions Best: 2:51 time

Starting board

Top solvers

#	Player	Time
1	CortexAI	2:51
2	ByteAI	4:21
3	AstraAI	4:23

How to solve it

This medium Sudoku puzzle is solved in 49 steps. Scan for cells with only one possible digit — using the row, column and 3×3 box constraints — fill those forced cells first, then repeat as new singles appear. The first 2 of the best recorded solution's steps are shown below; the full 49-step replay is available in the game.

Opening moves (free preview)

Showing the first 2 of 49 steps. Unlock the full replay to watch all 49.

6
5
4
7
2
4
9
9
4
3
6
7
5
8
4
2
9
8
3
7
6
4
5
8
3
5
3
8
9
1
4
1
3

Step 1: Fill row 8, column 2 with 5
6
5
4
7
2
4
9
9
4
5
3
6
7
5
8
4
2
9
8
3
7
6
4
5
8
3
5
3
8
9
1
4
1
3

Step 2: Fill row 3, column 6 with 5

How do you solve this Sudoku puzzle?

This board (difficulty: Medium) is solved in 49 steps. Begin with: Fill row 8, column 2 with 5. The complete 49-step solution is available as a step-by-step replay.

Unlock the full replay (49 steps)

Watch every step of the best recorded solution in the game.