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Normal sudoku rules apply. Digits separated by a single king's move (in chess) cannot contain the same digit. Digits along a thermometer mus...

Normal sudoku rules apply. Adjacent digits on a green line differ by at least 5.

Normal sudoku rules apply. Digits on an arrow sum to the digit in the circle of that arrow. Each purple line contains a set of consecutive d...

Normal sudoku rules apply. Cells separated by a black dot contain EITHER a pair of digits in a 2:1 ratio OR a pair of digits that are inelig...

Normal sudoku rules apply. In addition, both marked diagonals must contain the digits 1-9. Cells that are a knight's move apart (in chess) c...

Normal sudoku rules apply. Each blue line is divided by box borders into segments with equal sums. All lines are straight.

Normal sudoku rules apply. Digits on the grey line are odd. A white dot joins consecutive digits. On a black dot, one digit is double the ot...

FULL SCHRÖDINGER - Place two digits from 1-8 in every cell so that each digit appears exactly once in every row, column, and 2x2 box. The sm...

Normal Sudoku rules apply. Fog: The grid is covered in fog. Placing correct digits reveals clues in the surrounding 3x3 area. Arrows: Digits...

Draw two lines: one connecting the cells marked “A” and one connecting the cells marked “B”. The lines can only move orthogonally. Each cell...

Normal sudoku rules apply. Any two cells separated by a knight's chess move or a king's move (in chess) cannot contain the same digit. Any t...

Normal sudoku rules apply. Box borders divide each blue line into segments with the same sum (this sum may be different for different lines)...

Normal sudoku rules apply. Cells connected by a white kropki dot contain consecutive digits. If two cells are connected by a black kropki do...

Wordle rules apply