Food for Thought

"The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge." — Stephen Hawking

Food for Thought

"The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge." — Stephen Hawking

PlaySudoku.us
Medium · Puzzle #367
✓ Completed! 👍
8
2
1
5
7
9
1
5
8
2
3
9
6
3
7
1
7
6
2
5
9
8
8
4
1
6
5
2
4
6
8
7
1
00:00
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Math Insight

Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. A useful sanity check.

Math Insight

Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. A useful sanity check.