Sunday 6 September 2026 Rebuilt nightly from the WCA's official results · export of 6 September 2026 · About
The Middle Three

The numbers

The mathematics of the sport, checked nightly

Forty-three quintillion positions. A proof that twenty moves always suffice. Four of the five Platonic solids. One page per event: the puzzle's mathematics with its sources, and the sport's live numbers from last night's data.