- November 2011: Math Brain Teaser: Unfinished Thesis
- October 2011: Archimedes Grave
- October 2011: Optical Illusions @ National Geographic
- September 2011: A Brain Teaser for each Cognitive Ability
- August 2011: Test your attentional focus: is multi-tasking good
You can find many more brain teasers and games, for kids and adults, by visiting the Top 50 Brain Teasers and Games that our readers have enjoyed the most. Enjoy!