Sudoku Six

Fill the 6×6 grid: 1 to 6 once per row, column and box.

Sudoku on a 6×6 grid: the same reasoning as the classic, short enough to race a friend.

How to play

1. Select an empty cell and type or tap a number from 1 to 6.
2. Each row, each column and each 2×3 box must hold 1 to 6 exactly once.
3. The game ends when the grid is complete and correct.

Scoring

Speed counts: 1000 points for an instant solve, falling steadily to 400 at the last second. Not solved: 0.

What it works

• Logical reasoning You deduce each number from what the row, column and box already contain.
• Working memory You keep the candidates for a cell in your head while you look elsewhere.