002_Logic Puzzles

Traffic Lights

Complete the grid so that each row and column contains a red, orange and green light. The lights at the end of each column and row tell you the colour of the rst light you will meet if you travel in that direction down the column or row. 

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Shikaku

Divide the Shikaku grid into rectangles. Each rectangle must contain a single number, and that number must describe exactly how many boxes there are in the rectangle. 

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Takuzu

Each row and column contains the same number of O and X. The same symbol never appears in three adjacent cells, horizontally or vertically (e.g. ?XX? must be OXXO). Also, each row and each column is unique.

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Par Four

You have four shots in which to get your golf ball upwards from the tee to the hole. Choose one each from the Drive, Iron, Chip and Putt selections. Each shot goes straight from the starting to finishing square. Only one combination will get you in the hole and you may never land o the grid, in a tree or in a bunker. 

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Tents and Trees

For every tree you must mark a tent horizontally or vertically adjacent to it. No tent can be in an adjacent square to another tent (even diagonally) but a tree can border any number of tents. The numbers by each row and column tell you how many tents there should be in that row or column. Can you locate all the tents?

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Quipus

Challenge both your logic abilities
and your visual perception at the same time using
“Quipus”.

 

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Think Tank

Weekly puzzle problems devised David J. Bodycombe, Games consultant and puzzle writer; currently Question Editor for BBC4's Only Connect and author of Penguin Sudoku books.

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BrainSnacks (TM)

Train your brain with BrainSnacks®!

Every day we treat you to a new, unique visual brainteaser that will set your brain to work for a few minutes. Compare your personal score with the world score; you’ll know right away whether your brain is in top form.

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Masyu

Draw a line around the grid that passes through ALL the black and white dots before joining up with itself to make a continuous loop. Your line can pass through or turn left or right in empty squares, but there are rules for squares containing dots. Your line cannot cross over itself, branch off, or go through the same square twice.

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Gridlock

There is a pattern behind the placement of the shapes and colours within the grid. Can you identify the pattern, and work out which of the squares below correctly fills the vacant space?

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Enigmatico