return "krbp4/rqnp4/nbpp4/pppp4/4PPPP/4PPBN/4PNQR/4PBRK w 0";
let pieces = { w: new Array(8), b: new Array(8) };
for (let c of ["w", "b"]) {
return "krbp4/rqnp4/nbpp4/pppp4/4PPPP/4PPBN/4PNQR/4PBRK w 0";
let pieces = { w: new Array(8), b: new Array(8) };
for (let c of ["w", "b"]) {