Complete the puzzle and follow the instructions below for your chance to win.

Complete the puzzle and rearrange the letters in the shaded squares to spell out the name of an actor (3,5).

Complete the puzzle then cut out and keep the central 9x9 grid, as indicated by the hashed lines.

Complete the puzzle and rearrange the letters in the shaded squares to spell out the name of a singer (7,6).

Why didn't we try to complete the puzzle last season?

One such devilishly complex puzzle may at last have yielded its secret.

In this study we were only looking at one little piece of a complex puzzle.

In exchange the mathematician gave his artist friend a complex puzzle, built around an unusual geometric pattern.

The first four castaways to complete the first stage would move on to the second stage where they would assemble a complex puzzle.

This makes it easier to solve some of the complex puzzles.

The receiver saw the blank puzzles while the giver viewed the puzzle solution from an offscreen monitor.

Some of the puzzle solutions were altered and some removed.

The game was generally praised for its branching plot structure and multiple puzzle solutions.

The graphics are stunning and the scenery excellent, noting the multiple puzzle solutions and large game world.

Many of the puzzle solutions are inspired by various tales (so a player with knowledge of the stories beforehand would have an advantage).

It may help to solve the puzzle of strong employment growth and weak productivity.

At work, you can solve the puzzle about what a boss really wants.

And it would solve a puzzle that continues to baffle voters.

Contestants will solve the puzzle blindfolded, one-handed and even with their feet.

Viewers paid 75p to call and solve a puzzle - but fake winners were listed when no one got the right answer.

But when and how these arthropods first made that crucial transition from water to land remains an unsolved puzzle.

In science, causes for this phenomenon have been proposed but never confirmed, making the reasons for this behaviour an unsolved puzzle.

Few linguists have allowed their sheer enjoyment of language - its surprises, its unsolved puzzles, its extraordinary patterns - to be so evident in their writing.

Players can visit certain areas in order to play undiscovered or unsolved puzzles that are left behind as the story progresses.

Can you work out the answers to these fiendish riddles and visual puzzles?

Tackle hundreds of logic, maths, language and visual puzzles to earn a global ranking score of your own.

It's fitting that he would be attracted to blacklight images, seeing as his paintings are also known for being visual puzzles, incorporating paint over images and scratched out words.

They must then solve a series of visual puzzles, usually word puzzles but also celebrity face combinations, as the plank recedes 1in cm per second.

They were then asked to solve a series of visual puzzles, but could only give their answer while kneeling on a complete pile of cushions.