Thermometer Sudoku in short is known as Thermo Sudoku. Most of the puzzles appearing on this website are named short name Thermo Sudoku. In Thermometer Sudoku, Thermometers are given on the grid. In these Thermometers numbers appearing should be in increasing order with the lowest number coming on the bulb of the thermometer.

To solve Thermometer Sudoku, one has to see where a big number and a small number can be fitted. It is because the biggest number 9 can only come at the end of the thermometer and the smallest number 1 can only come on the bulb. These two numbers 1 and 9 cannot come in between anywhere on the thermometer. Once these numbers are entered then one can try to put 2 and 8 respectively and so on.

There are a few Thermometer Sudoku puzzles along with some variations on this website. Soon I will post a few more puzzles of this type and this page contains the link to all these Thermometer Sudoku puzzles and Thermometer Sudoku variations.

__Rules of Thermometer Sudoku Puzzles__
Place a digit from 1 to 9 into each of the empty cells so that each digit appears exactly once in each row, column, and 3x3 outlined box. Additionally, some thermometer shapes are in the grid; digits must be strictly increasing from the round bulb to the flat end.

### Thermo Sudoku (Daily Sudoku League #186)

Following are the links to the Thermometer Sudoku variation puzzles. Rules of these puzzles are given on the respective pages.

### Liar Thermometer Sudoku (Daily Sudoku League #188)

Check out more Sudoku Variations by clicking on the below image

Sudoku Variations Main Page |

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