Lots of people agreed that there were 17 squares altogether; 3 small squares, 6 medium size squares and 8 large ones.

Simon Etheridge (Age 9, Tattingstone School) used shading to show where each square can be found - something like this ......

This is a list of people who sent in a correct solution. Well done everyone!

From Private ERMAK Primary School, Istanbul, Turkey,( Age 12): Sinan Ersanli, Aye Mine Erkal. Kerem Ulusoy, Ece Demir, Idil Ataç, Deniz Karaca, Simin Araz, Ece Oney, Sinan Ersanli, Damla Eren, Efsane Karayilanoglu, Emre lker. (Apologies for any miss-spelt names - sometimes some of the letters are replaced by dashes or other marks when the email arrives).

Che and Ambi (Age 12/13), Courtney Strapps, (Annesley College, Adelaide, Australia)

Michael, Alex, Sophie Peterken Olivia Greenham (Age 11) and Laura Plant (Age 10, St Ives School, Haslemere)

Jason Day (Age 11, Priory Middle School, Dunstable)

Rebecca Sherwood, Caroline Foster & Emily Gibbons (Age 12, The Mount School, York)

Ella Campbell (Age 10, Wesley College Preparatory School, Australia)

Amy, Colette, Kathryn, Katerina & Nicola (10 years, Primary Maths Club International School of Toulouse) who explained, "We started with the biggest squares first. Then we counted the medium sized ones and then the smallest ones. After we added them all together and found the answer which is 17 squares".

Christina Ivanova (Age 10, Marlborough School)

Daniel V (Age 10) and Thomas Harley (Age 9), Tattingstone School

Daniel Loh (Singapore)

Nic Barron, Thomas Broadhurst, Thomas Robinson & Michael Molinari (Age 10/11, St Francis Catholic Primary, Maldon, Essex).