if (['K','k'].includes(row[i])) kings[row[i]]++;
if (['x'].concat(V.PIECES).includes(row[i].toLowerCase())) sumElts++;
else {
if (['K','k'].includes(row[i])) kings[row[i]]++;
if (['x'].concat(V.PIECES).includes(row[i].toLowerCase())) sumElts++;
else {