Regularly Irregular
Normal sudoku rules apply.
Digits in a cage cannot repeat.
Cells separated by a white dot must contain consecutive digits.
Cells separated by a black dot must contain digits in a 2:1 ratio.
Cells separated by an “X” must contain digits that sum to 10.
Inner Tension
Normal sudoku rules apply.
Digits cannot repeat on either main diagonal.
Digits along a thermometer must increase from the bulb end, but need not be consecutive.
Digits along an arrow must sum to the digit in the circled cell.
Cells separated by a white dot must contain consecutive digits.
High Floor, Low Second Floor
Normal sudoku rules apply.
Cells separated by a V must contain digits that sum to 5. Cells separated by an X must contain digits that sum to 10.
Digits along a thermometer must increase from the bulb to the tip. Consecutive digits along a green line must differ by at least 5.
Digits in a cage must not repeat and must sum to the total given in the top-left corner.
Round and Round
Normal sudoku rules apply.
Digits along an arrow must sum to the digit in the circled cell.
Each 2×2 box joined by a white circle must contain every digit in the circle at least once.
Cells separated by a white dot must contain consecutive digits.
Turning Up the Heat
Normal Sudoku rules apply.
Digits must increase along a thermometer; they do not need to be consecutive digits.
A circle containing four digits at the center of a 2×2 block indicates the digits that must go in the surrounding cells in some order.
Sudoku in Black and White
Normal Sudoku rules apply.
Cells separated by a white dot must contain consecutive digits. All possible white dots have been included!
Cells separated by a black dot must contain digits that form a 2:1 ratio. NOT all possible black dots have been included!
Aiming High and Low
Normal Sudoku rules apply.
Cells separated by a “V” must sum to 5, and cells separated by an “X” must sum to 10.
The digits along an arrow must sum to the digit in the circle at the start of the arrow.
Sandwiched Between
Normal Sudoku rules apply.
A number lying outside of a row/column indicates the sum of the digits that lie between 1 and 9’s position in that row/column.
The digits along each “between” line must lie strictly between the digits in the circled ends.
Inside Out
Normal Sudoku rules apply.
Digits along an arrow must sum to the digit in the corresponding circled cell.
Opposites Attract
Normal Sudoku rules apply.
Digits in a cage may not repeat and must sum to the total in the upper-left corner of the cage.
Digits separated by a black dot have a 2 to 1 ratio. Digits separated by a white dot are consecutive. Not all dots are given.
Consecutive digits along a green line must differ by at least 5. On blue lines, consecutive digits must instead differ by at most 4.
Digits on a purple line must correspond to a set of consecutive digits with no repeats. On orange lines, no pairs of consecutive digits can appear.
Mixed Magic
Normal Sudoku rules apply.
The central row, central column, and two main diagonals must sum to the same total in the central box (shaded in gray).
In the 3×3 regions enclosed by dashed lines, the outer rows and columns must sum to the same total. Digits in these 3×3 regions may repeat.
Killer Sudoku, man
Normal Sudoku rules apply.
Digits in a cage must add to the total in the top-left corner of the cage.
Bullseye Sudoku
This puzzle consists of five 4×4 sudokus: one central 4×4 sudoku that is joined to an additional 4×4 sudoku at each of its four corner cells.
In each 4×4 sudoku, every row, column, and 2×2 region must contain the digits 1-4 with no repeats.
Digits along an arrow must sum to the digit in the corresponding circled cell.
No playable link. 🙁