The numbers
The 3×3 Multi-Blind, in numbers
Everything countable about the 3×3 Multi-Blind: the mathematics of the puzzle with its sources, and the live state of the sport, rebuilt nightly.
- A 3×3 has 43,252,003,274,489,856,000 positions (43.25 quintillion). Visiting one per second would take about 1.4 trillion years, roughly a hundred times the age of the universe. cube20.org
- God's Number is 20. God's Number answers a simple question: what is the worst case for a perfect solver? However scrambled the cube, a shortest possible solution never needs more than 20 moves. That was proven in 2010 by Rokicki, Kociemba, Davidson and Dethridge, using about 35 CPU-years of computing donated by Google. cube20.org
- The world record single is 63 of 65 cubes · 58:23 by Graham Siggins, standing 323 days.
- 31,126 completed solves are on the official record in 3×3 Multi-Blind, from 3,695 competitions in 90 countries.
- 4,268 people hold an official ranking. The median personal best among all of them is 3 of 3 cubes · 15:57.
- The world record has moved 27 times since records began in 2007.
- 91 countries hold a national record, and the spread is wide: the fastest is 63 of 65 cubes · 58:23, the most beatable 1 of 2 cubes · 20:00.
- 38% of all official attempts in this event end in a DNF, against about 2% in regular 3×3. This is the sport's own measure of how hard blindfolded solving is.
- The world record stands at 63 of 65 cubes, blindfolded, in under an hour: the event where the sport's memory outruns its hands.
- Results begin in 2007; every figure on this page recomputes nightly from the official export.