How to play.

When you first open Einstein's Sudoku, you should see a screen like this:

This is the game screen.  At the top, you'll see a timer counting how long you've been playing and another one counting up your score.  Your score is the time it takes you to solve the puzzle, plus a penalty if you use any hints.  A lower score is better, and you can upload your score to the online leader-boards to see how well you do against your friends.  In between these two numbers is number of your randomly-generated puzzles.

Underneath that, we have the screen where you'll be doing most playing:

 Your job here is to figure out which person goes in which house, and which fruit they eat.   If you tap on any of the cells, it will bring it into focus:

If you know one of these houses definitely doesn't go in this spot, you can tap on it once to remove it.

Or, if you're sure that another color does go here, you can hold your finger on it to promote it, and remove all the other ones:

 When you do this, it automatically removes that color of house from all the other places.  You continue removing and promoting items until each space only has one person, one house, one fruit, and one drink in it.

But how do you know which items to remove and which to promote?  Well, that's where the clues come in.  Underneath the grid is a set of clues for each puzzle:

The clues on the left are very simple.  They tell you that the person in the orange house eats strawberries and also drinks coffee.  Clues here will always tell you that two things go together in the same house.  The clues on the right could tell you a couple things.  

If you see two items with an ellipses between them, like this: It means that the item on the left has to be left and the item on the right has to be on the right.  So in this picture, you would know that the man with the green background has to be to the right of the person who eats peppers.  It doesn't, however, mean that they are right next to eachother.

 If you see three items in a row, like this:it means that the item in the middle is between (and directly next to) the two items on the side.  So in this picture, we know that the  blue house is between the house where somebody drinks scotch and the house where somebody drinks coffee.  However, the person who drinks coffee could be on the left or the right.

If you see two items next to eachother, like this: it means that those two items will be next to eachother in the neighborhood, but either one could be on the left or the right.

Based on the information given in these clues, you have everything you need to know in order to gradually deduce who and what goes into each house in the grid above.  Sometimes, there will be more clues than fit on the screen, so if it seems like you don't know enough information, be sure to try scrolling in the clue windows!

Finally, at the bottom of the screen, you will see the options bar:

The  +  button on the left will refresh Einstein Sudoku and start a new puzzle for you.  The undo button will undo a step you've done in the game, and the redo button will undo an undo.

If you get stuck, you can press the "Clue" button.  This will either tell you what you can eliminate next.  Or, if you made a wrong move, it will tell you how many steps to go back.  Don't over-use it, though, because hints will add to your score.

If you forget how to play, the "?" button will give you a quick tutorial, and the last button on the right flips over to the options side of the screen:

From here, you can change the size of the game grid (which will change the difficulty), check your scores against your friends, and find out more about the app.

Happy puzzling!