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Emergency Lighting is a puzzle in Professor Layton and the Last Specter.

Puzzle

Even a fabulous chandelier isn't going to be much use in a blackout.

Let's say you need to light a room during a blackout using only seven lamps. Each lamp will light the square it's on and one square on each side of it.

How would you place seven lamps to light this entire room?

Hints




Click a Tab to reveal the Hint.

US Version

There is more than one way to place the lamps. Start by placing a few lamps, and avoid overlapping lit squares as much as you can.

UK Version

There's more than one way to place the lamps. Start by placing a few lamps and avoid overlapping lit squares as best as you can.

Put a lamp in the top square of the middle column. Now try placing the other lamps with as little overlap as possible.

US Version

Once you've placed a lamp in the top square of the middle column, place lamps in the leftmost and rightmost squares of the second row from the top. Then put one on the bottom right.

UK Version

Once you've placed a lamp in the top square of the middle column, place lamps in the leftmost and rightmost squares of the second row from the top. Then put a lamp in the bottom-right.

After following Hint 3, you'll have three lamps left. Put one in the second column from the right, third row from the top. Put another in the second column from the left, second row from the bottom. You can work out where to put the last one, right?


Solution

Correct

Correct!

The warm glow of lamplight is quite nice to have every once in a while, isn't it?

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A big thanks to http://professorlayton4walkthrough.blogspot.com

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