I'm on a mission to do every Brain Teaser quiz so I monitor how many there are and how many I've played each week.

On 27 Jan there were 2914 quizzes and I had played 2036. Now on 10 Feb there are 2882 and I have played 2012.

Does any one know anything about this? Is it a mistake or has some adjustment been made? If so what and why?

Some have been moved over to the Geography Wordplay section which was a more apt home for them. Nothing sinister going on.

I had something similar going on. I've been trying to record every single quiz I have taken when I came across this adjustment. I had a decrease in the Brain Teasers category and an increase in Geography quizzes, and it took me a while to figure out what happened.