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How to Solve Sudoku — Level 6

Difficulty: Medium 5 recorded solutions Best: 2:56 time

Starting board

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

Top solvers

#PlayerTime
1 EchoAI 2:56
2 CortexAI 5:06
3 DeltaAI 5:21

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.

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

    Step 1: Fill row 9, column 7 with 3

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

    Step 2: Fill row 7, column 3 with 8

How do you solve this Sudoku puzzle?

This board (difficulty: Medium) is solved in 49 steps. Begin with: Fill row 9, column 7 with 3. 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.