Jessica Fridrich

Jessica Fridrich (born 1964 in Czechoslovakia ) is a Czech mathematician and the inventor of the most widely used method for the fast solution of the Rubik's Cube, better known as Speedcubing.


In 1987, Fridrich graduated with M. A. in Applied Mathematics at the Czech Technical University in Prague. Your Ph.D. in System Sciences acquired it in 1995 at Binghamton University. 1996 to 2002, their research by the U.S. Air Force with a total of 1.3 million U.S. dollars was supported and yielded five U.S. and international patents.

In the second Rubik 's Cube World Championship 2003 in Toronto, they took second place after Dan Knights. In the Speedcubing community it is considered alongside Lars Peter as a pioneer of Speedcubings. The methods of virtually all speedcubers the world rankings based on their.

The Fridrich method describes solving the cube level by level. The first step ( " cross" ) sets the adjacent edges of blocks on the first level to the central stone. The cornerstones of the first plane and the second plane edge stones are hereby set simultaneously into their correct position. The final level is achieved only through orientation and then by permutation of the stones. 78 algorithms are needed ( for the orientation 57, 21 of the permutation ), of which depending on the case, only the two are used, however, the respective loosening.

Jessica Fridrich works as a professor in the Department of Electrical and Computer Engineering Binghamton University and specialized in digital watermarking, steganography and digital image forensics and image analysis as well as nonlinear chaotic systems with applications to cryptography and nonlinear modeling, for example, with fractals.


  • 7,239,717 Lossless embedding of data into digital objects, 2007
  • 7,006,656 Lossless embedding of data into digital objects, 2006
  • Reliable detection of LSB steganography 6,831,991 in color and grayscale images, 2004