Pro Tip

Before using pencil marks, see how far you can get on a hard puzzle with pure mental tracking.

Pro Tip

Before using pencil marks, see how far you can get on a hard puzzle with pure mental tracking.

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

PlaySudoku.us

Medium · Puzzle #845

✓ Completed! 👍

5

4

7

6

2

4

3

6

7

2

6

9

3

7

8

2

1

4

3

2

5

9

8

2

7

2

5

9

1

00:00

Scientific Mind

"Somewhere, something incredible is waiting to be known." — Carl Sagan

Scientific Mind

"Somewhere, something incredible is waiting to be known." — Carl Sagan