Dante’s millions
As I write, the London world championship is tied at 3½-3½, after seven games. In striving to move ahead, the challenger, Fabiano Caruana, has been the victim of the awesome mathematics of chess. According to the statisticians there are more possible moves in chess games than there are atoms in the observable universe. Ten to the power of 70 is the official estimate. As someone with a good Italian name and ancestry, Fabiano may be familiar with Dante’s Paradiso. In Canto 28 the poet writes: ‘Ed eran tante, che ‘l numero loro, Piu che ‘l doppiar de li scacchi s’inmilla.