Their entry has been transformed into a commercial board game for sale all over the world by Mind Challenge Ltd.

The game invented by grade 6 pupils Katelyn Victory, Elisabeth West, D'nykia Frost and Michelle Els, now called Race Around The World, was officially launched to the toy industry at the Australian Toy Fair in Melbourne and it has already been nominated for this year's Australian puzzle of the year by the Australian Games Association.

The Exercise Your Mind Challenge was run by Queensland's Dr Wood Challenge Centre in conjunction with Launceston toy retailer Inquizitive.

Launceston's Inquizitive director Louise Smith said the game was originally called the Arrow Challenge and had come a long way from the three A4 sheets of paper submitted by the team.

"The Race Around The World adaption is based on the principle the girls thought up, where you have to follow arrows to get around the board and they submitted easy, medium and hard versions but the end product has been made harder still," Ms Smith said.

Dr Wood Challenge Centre not only awarded the girls first prize but is now publishing Race Around The World in 14 languages and 28 countries around the world.

The official launch and presentation of the puzzle in Launceston will be held at Inquizitive on June 26, at 11am.

The four girls will be presented with their prizes by Dr Wood Challenge Centre chief executive Vishal Mehrotra, and general manager Ben Pusztai along with Ms Smith.