iPhone app Mathrax - Sudoku and Maths

Mathrax is a logic puzzle.
The goal is to fill in each cell with numbers from 1 to N, where N is the size of the puzzles side.
No number may appear twice in any row or column.
Circles with additional conditions may appear on intersections of lines inside the grid.

- A number and a sign of mathematical operation (addition, subtraction, multiplication, division) - a number is a result of an operation execution with numbers in diagonally adjacent cells.

- A letter E (even) - all numbers in four cells are even.

- A letter O (odd) - all numbers in four cells are odd.

**** Mathrax features ****

# Content

- 6 different sizes of board

- 5 difficulty levels

- more than 500 levels

# Features

- Highlight wrong number automatically

- Autosave the process of unfinished levels

- Record best completion time for each level

# Challenge

- Game Center Achievements

- Try to complete as many levels as possible,

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