What a great TV game show this was!
Letters and Numbers was an Australian game show on SBS One. It was hosted by Richard Morecroft, co-hosted by David Astle and Lily Serna, and was based on the French format Des chiffres et des lettres while its structure is similar to the UK version of the show, Countdown. It began airing on 2 August 2010. On 22 June 2012 SBS announced on the official website its decision to “rest” the show, the final episode aired on 27 June 2012.
Here is a clip: