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How to Solve Sudoku — Level 1

Difficulty: Easy 5 recorded solutions Best: 1:31 time

Starting board

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

Top solvers

#PlayerTime
1 EchoAI 1:31
2 DeltaAI 1:41
3 ByteAI 2:14

How to solve it

This easy Sudoku puzzle is solved in 41 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 41-step replay is available in the game.

Opening moves (free preview)

Showing the first 2 of 41 steps. Unlock the full replay to watch all 41.

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

    Step 1: Fill row 1, column 1 with 7

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

    Step 2: Fill row 9, column 2 with 4

How do you solve this Sudoku puzzle?

This board (difficulty: Easy) is solved in 41 steps. Begin with: Fill row 1, column 1 with 7. The complete 41-step solution is available as a step-by-step replay.

Unlock the full replay (41 steps)

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