The most difficult IQ test question I have ever seen

Qian yongchao, a netizen, sent an email saying that he was reading a book named outliers. When talking about iqtest in the book, the author mentioned Raven's
Progressive
Matrices test method. This is a series of questions from easy to difficult, generally with 48 questions. To illustrate how difficult this test can be, the author gives the last question of the entire test, even if the author does not know how to do it. I searched the internet and confirmed that the question printed on the book was wrong. In fact, that question is the last question of the spark iqtest on iqtest. dk. This question is really difficult. Countless people are stuck here and cannot understand it.

The answer is [B]. Cause:Each square goes through three steps to become the square on the right. First, move all columns to the right of the loop. Then, move the first column to the loop. Finally, replace all shapes in the loop (× change ○, ○ change ▲, or ▲ change × ). In addition, the first line from the end of a row to the next line is also regular, that is, the entire square rotates 90 degrees clockwise.

However, this is not the most difficult IQ test question I have ever seen. A long time ago, I saw a haselbauer-dickheiser
This is the most difficult iqtest question I have ever seen. It is designed for testing by more than 180 of people with IQ, and officially only recommends that the 1% of people with the highest IQ in the world perform the challenge. The strange thing is that this test cannot be found now, and the test page seems to have been deleted on the official website. Fortunately, I saved all my questions and shared them with you. You can view all 25 questions at www.matrix67.com/iqtest.