Paper Logic Sudoku

Different Sudoku rules, with candidate notes, undo and explained logical hints. Each variant has 200 verified puzzles.

Number & logic puzzles · Progress stays in this browser

Fill the grid so every row, column and box contains 1–9.

Solve a Sudoku grid with two extra no-repeat diagonals.

Fit 1–9 into rows, columns and irregular regions.

Use cage totals and no-repeat rules to find the missing digits.

Follow increasing thermometer paths to complete the grid.

Make the digits along each arrow add up to its circle.

About this series

Different Sudoku rules, with candidate notes, undo and explained logical hints. Each variant has 200 verified puzzles.

Match the floor, hide from the hunter and break the trail.