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Medium
3
4
6
5
5
3
2
5
1
4
5
1
6
4
2
5
3
1
New game
Fill every row, column, and 2×3 block with the digits 1–6 (no repeats). The grid is 6×6—smaller than classic Sudoku but the same kind of logic.
About Medium
Balanced practice: straightforward singles and a bit of scanning.