**Sudoku diagonal**
In the diagram, digits in one of the diagonals can’t be repeated.

**Sudoku X**
Digits can’t be repeated in both diagonals.

**HyperSudoku**
In the diagram 9x9, you can find additional 3x3 four boxes, where digits also can’t be
repeated.

Specific method for this kind of Sudoku is about finding digits, which can be put in
both overlapping boxes at the same time.

**Double Sudoku**
Sudoku which consists of two sudoku diagrams.

**Tripple Sudoku**
Sudoku which consists of three sudoku diagrams.

**Double column Sudoku**
Sudoku which consists of two sudoku diagrams stacked in one column.

**Tripple column Sudoku**
Sudoku which consists of three sudoku diagrams stacked in one column.

**Sudoku Slant**
In colored lines digitis can't be repeated.

**Sudoku Thermometer**
On the Sudoku board there are thermometers - starting from bulb digits must increase.

**Sudoku Thermometer 9**
Variant of Sudoku Thermometer where consecutive digits from 1 to 9 are revealed.

**Sudoku Thermometer 0**
Variant of Sudoku Thermometer where on the board there are only thermometers without a single digit revealed.

**Sudoku Diabolic**
On the board, there are nine, additional blocks marked with different colors. Digits in these blocks can't repeat - similarly as in lines and squares. High perceptiveness required :)

**Sudoku Pairs**
On the board, there are additional cells marked with color. If there are two cells with the same color, it means in these cells is the same digit. If there are four cells with the same color, it means in these cells are two pairs of digit, for example two digits 1 and two digits 9.

**Sudominoku - Sudoku Domino**
On the board, there are shown domino tiles. The exact tile can appear on the sudoku board only once. For convenience - above sudoku board there is domino set, domino tiles
can be selected by clicking (for example when given tile has been used on the sudoku board).

**Sudoku - Odd reciprocals**
In the reciprocals' fields there are only odd digits.

**Sudoku - Even heart**
In the heart's fields there are only even digits.