Speed DemonG 5

Speed Demon G5:
Complete a puzzle in less than 1 minute

This achievement requires that you complete a standard Sudoku puzzle of any difficulty in less than one minute. To make this easiest, select Very Easy difficulty. There are two easy methods to unlock this achievement:

* Turn on all Guides. Start by tapping the number 1. Places on the board where you can place the 1 will show up. Look at each 3x3 grid. Tap those spots for the 1 that have only one option in the grid. If none have just one, tap one of the available spaces. If it is wrong, a red "X" will appear. If so, tap that space again to remove the 1, and try another spot. Once all 1's are placed, proceed to 2s, and so on. It will become easier and quicker as the board fills. This is a technique you should master to make completing 100 puzzles for the "Call me Master" achievement go very fast.

* When the board loads, take a picture of the screen (with a camera phone, camera, or a screenshot). Then pause the game (by tapping the back arrow in top left, or by minimizing the app). Solve the puzzle on your own, writing it down. Return to the game and quickly input all of the numbers.

Overall, this achievement is not that difficult. Method 1 is suggested, but two should work for everyone. Once you complete a puzzle in 59 seconds or less, the achievement will unlock.