To keep up the winning momentum, contenders must stay focused, especially with the semi-finals in sight. Topics include a character, an artist, a word, and a film director.

The quiz show that's not for the faint-hearted: vital human organs, the TV series Daisy Jones and the Six, the Jack Parlabane novels and mycology.

Contenders test their knowledge of specialty topics, including Disney villains, Dimension 20: Fantasy High, and Dark Castle's horror films.

Contenders test their knowledge of specialty topics, including Peter Brock and the Bathurst 1000, the Old Kingdom novels, Operation Sea Lion, and the puppet-based kids' show, Sesame Street.

Contenders test their knowledge of specialty topics, including Olympic marathon winners, photographer Frank Hurley, duplicate bridge, and Aussie marsupials.

The top contenders face off to secure their place in the semifinals. The slow burn topics are a performer, a city, a game and a historical event.

Contenders are quizzed on their great entertainment specialty subjects: Superstore, Ed Sheeran, Cass Elliot and Disneyland.

Contenders test their knowledge of speciality topics, including Veronica Mars, Outkast, the Border-Gavaskar Trophy and 18th Dynasty Egypt.

Contenders test their knowledge of speciality topics, including what US country music, the female heroes of MCU, Man United's Jose and Ole and The Elephant Man have in common.

Contenders test their knowledge of speciality topics, including The Mission Impossible films, Ready Player One, wine making in South Africa and the state of New Jersey.

The best four are back to vie for a place in the semi-finals. The slow burn topics are an animal, a band, a film and an invention.

Contenders test their knowledge of speciality topics, including Gone Girl, jazz music theory, the rock band Evanescence and Lego.

Contenders test their knowledge on special topics, featuring the East India Company, the great Ingrid Bergman, the band Paramore and Ramin Djawadi's Game of Thrones soundtracks.

Contenders test their knowledge of speciality topics, including the life and works of Lisa Kudrow, 1990s Hollywood hits, the Deadpool trilogy and A Song of Ice and Fire.

Contenders test their knowledge of speciality topics, including TV series 24, the music of Janet Jackson, dingoes and Civilization III.

The winners of the week return to compete for a spot in the semifinals. They face two minutes of general knowledge in the slow burn round, which features a musician, a scientist, food and a year as topics.

Contestants test their knowledge of specialty topics, including Sweet Valley High books, the history of classic pinball machines, fundamental particles, and American hip-hop in the 90s.

Get set to be bowled over by specialist knowledge of The Deccan Charger IPL cricket team, the Gaelic language revival movement, the history of Wimbledon, and the B-52s.

Contestants test their knowledge of specialty topics, including The Stooges, Mariah Carey, the works of Charlotte Bronte, and the career of basketballer Steph Curry.

The contestants are quizzed on their specialty topics: controversial personality Belle Gibson, the band Weezer, 65 years of Barbie and musician Fiona Apple.

The weekly final begins as Generation Z, Millennials, Generation X and Boomers compete to be the smartest. Slow burn topics are a TV Show, a book, a landmark, and a sportsperson.

The last heat begins and the specialty subjects include the journey of the winner on US Survivor, System of a Down, Bollywood actor Amitabh Bachchan and Leonardo da Vinci.

Heat three begins and the specialty subjects include Harry Styles after One Direction, the life and works of Harry Seidler, West Wing and Buddy Holly.

Heat two begins as generations choose their speciality subjects including Transformer toys, the history of Android, the life of Melivil Dewey and the Bridget Jones films.

Generation wars kick-off the first heat. Generation Z, millennial, generation X and baby boomer go head to head in the ultimate battle for knowledge.