There are three sheets of transparent plastic with different patterns painted on them. If you layer them correctly, a checkerboard pattern appears. The order in which you layer them is important, and you can't flip or rotate the sheets.
Which sheet goes on the very bottom--A, B, or C?
UK Version
Here are three sheets of transparent plastic with different patterns painted on them. If you layer them correctly, a chessboard pattern appears.
The order in which you layer them is important, and you can't flip or rotate the sheets.
Which sheet, A, B or C, goes on the very bottom? Touch a letter to give your answer.
You're not trying to build the entire checkerboard in your head at once, are you? That will only confuse you.
Try focusing on just one part of the board first.
UK Version
You're not trying to build the entire chessboard in your head at once, are you? That will only confuse you.
Try focusing on just one part of the board initially.
US Version
Any sheet that doesn't already have a rough checkerboard pattern on it can be excluded as the top sheet.
UK Version
The layered sheets must make a chessboard pattern. In some areas, the pattern won't appear until you have layered all three sheets, though.
Keep this in mind and try to work out which sheet could go on top of the pile.
US Version
A sheet that contains adjacent squares of the same color can't go on top.
UK Version
A sheet that contains adjacent squares of the same colour can't go on top.
US Version
Sheets A and B have adjacent squares of the same color. If you put either of these sheets on top, you won't have a checkerboard. In other words, you know that C goes on top.
Now that you know this, think about what colors need to fit into the black squares of sheet C.
UK Version
Sheets A and B contain adjacent squares of the same colour. If you put either of these sheets on top, you won't have a chessboard pattern. In other words, you know that C goes on top.
Now that you know this, think about which colours need to fit into the blank squares of sheet C.
Solution
Incorrect
Too bad!
Think carefully about how the sheets should be layered.
Correct
Nicely done!
US Version
B goes on the very bottom, and then the other sheets are layered in the order pictured above.
UK Version
B goes on the very bottom, and the other sheets are laid on top in the order pictured above.