const mainTime = timeUnitToSeconds(mainTimeValue, mainTimeUnit);
let increment = 0;
if (tcParts.length >= 2) {
+ // Correspondance games don't use an increment:
+ if (mainTimeUnit == 'd') return null;
tcParts[1] += "s";
const incrementArray = tcParts[1].match(/^([0-9]+)([smhd]+)$/);
if (!incrementArray) return null;