Product Overview
Thermometer sudoku is an enjoyable variant of standard sudoku puzzles, and takes the solving temperature up a little!To solve thermo sudoku puzzles, you need to place the numbers 1-9 once in each row, column and 3x3 bold-lined box that form the grid, as with standard sudoku puzzles. In addition, each puzzle contains a number of thermometers, hence the name of the puzzle. Inside each thermometer, the numbers must increase from the number in the bulb (circled cell) to the opposite end. For instance, a thermometer containing five squares could contain 1,2,3,4,5 or 1,3,5,7,9. However, it could NOT contain 1,3,3,5,7 as that repeats a number, nor could it contain 1,3,5,7,6 as the numbers do not all increase (6 is less than 7).The logic used in thermo sudoku is therefore a charming mix of the logic required to solve sudoku puzzles combined with the logic required to solve futoshiki puzzles (or greater / less than sudoku).All the puzzles in this book of thermometer sudoku can be solved using logic alone, there's never any need to guess when solving these puzzles. And, if you get stuck or just want to check your solution, all the answers are there at the back of the book.
