Crosses 
4square85
This is a great puzzle which shows how our minds can be conditioned by problems that get increasingly difficult.
We'd love to know who designed this puzzle and built the PowerPoint file. If you know, please email us at info@seiyaku.com so we can give the designer full credit.
You'll enjoy this
(Note: This puzzle is in a PowerPoint file. If you don't have a PowerPoint reader on your PC, download this Microsoft PowerPoint Reader.)
Just click on the image below and follow the instructions.
The first few images for this puzzle are displayed quickly and it's worth using pause/restart keys ('S' or '+' on your keyboard) to advance the slides at your own pace.
We'd love to know who designed this puzzle. If you know, please email us at info@seiyaku.com so we can give the designer full credit.
