PlaySudoku.us
Easy · Puzzle #924
1
2
6
8
9
3
6
5
9
7
8
4
1
2
7
6
6
2
3
8
9
1
7
3
2
4
1
5
4
1
9
7
2
7
6
1
2
8
8
4
2
6
1
9
2
9
1
8
7
4
6
Look for digits that already appear 7 or 8 times on the board — they're the easiest to place last.
Look for digits that already appear 7 or 8 times on the board — they're the easiest to place last.
The brain releases dopamine when it solves a puzzle — the same reward chemical triggered by food and exercise.
The brain releases dopamine when it solves a puzzle — the same reward chemical triggered by food and exercise.