Mathrax vs Area Puzzle by TKPY

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 puzzle's 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

How large is the blue area? One rule runs through every puzzle: look at the diagram and find the area shaded blue. Split a shape, move a part or fill a gap. A different perspective can reveal a path to the answer. 400 puzzles at your own pace Choose from Easy, Normal and Hard. Start with any available puzzle, whether you have a short break or time to think it through. See each idea step by step Three hints and illustrated explanations help you explore the solution. Move forward and back yourself to revisit the parts you want to understand. Sketch, star and revisit Try your ideas with a pen, eraser, undo and clear. Star the puzzles you want to return to and find them again in Favorites. Turn solutions into geometric art Your first correct answer to each puzzle earns one piece. Ten pieces complete one artwork, with 40 artworks to collect. Each artwork's name stays a surprise until it is complete. Available in Japanese, English, Simplified and Traditional Chinese, Korean, Spanish, Brazilian Portuguese, French and German. Progress, notes and favorites are saved on your device. About ads The app includes banner ads and ads at natural breaks, such as leaving a puzzle. Earn the reward from one video ad to unlock all hints, the answer and explanations for that puzzle. You do not need to watch again for the same puzzle.