MathDoku Extended integrates MathDoku and Killer Sudoku with calculator! The game is based on the famous open source implementation of a well known sudoku-like games which uses a little math. Our extension has several improvements over the original: - on the same board you can play both Mathdoku and Killer Sudoku - integrated call to our own DigitCalc - a simple calculator that computes all combinations of one-digit numbers which gives a desired result for selected mathematical operation. It is a standalone application which can be used with this and other sudoku-like games. If DigitCalc is called from the game, it automatically gives possible combination for selected cage considering already resolved cells and if cage is in line (so without duplicates). - enabled long touch to fill cell. No need to constantly switch between normal and 'maybe' mode. Just tap shortly to put 'maybe' or long touch to put the solution into a cell. - lazy mode option in settings to automate trivial solutions - long press back button to set checkpoint and rewind to it - long press cells with 2 or 3 'maybes' to remove trivial 'maybes' in other cells - sum numbers in cages to help in Killer Sudoku solving - bigger board - bigger 'maybe' numbers - 3x3 digit panel - new theme with more visible colors Features removed from the original: - swipe - scrolling text on top - penalty on check progress - sharing by e-mail If you are missing some of the removed features and/or don't need the added features please stick to the original. If you like our work and have some suggestions or complaints, feel free to contact us at: klokisoft@gmail.com