let pieces = { w: new Array(6), b: new Array(6) };
// Shuffle pieces on first (and last rank if randomness == 2)
for (let c of ["w", "b"]) {
let pieces = { w: new Array(6), b: new Array(6) };
// Shuffle pieces on first (and last rank if randomness == 2)
for (let c of ["w", "b"]) {