Calcudoku

In this Calcudoku Puzzle book, you will find 300 medium sudoku-like logic puzzles with brief introduction, instruction, and solutions in the back. To solve this puzzle you must place numbers into the puzzle cells so that each row and column contains each of the digits from 1 up to the size of the puzzle. In this respect, they are similar to Sudoku puzzles. Unlike Sudoku puzzles, you are not given any starting digits. Instead, the puzzle is divided into Domains, areas surrounded by a bold outline, containing from two to four cells. Each domain contains a hint consisting of a number and one of the mathematical symbols + x - /. The number is the result of applying the mathematical operation represented by the symbol to the digits contained within the domain. This will provide enough information to allow each of the digits to be determined.