Entropic Sudoku
The rule: On a peach line, every three in a row include one low (1-3), one middle (4-6) and one high (7-9).
Play unlimited Entropic puzzles free — every one generated with a unique solution, rated by the solving techniques it actually needs.
- Four difficulties, from gentle to expert
- Step-by-step hints that teach, not just tell
- Interactive lessons and a daily race
- Make and share your own puzzles