<svg width="240" height="240" viewBox="0 0 240 240" role="img" aria-label="Шахматная доска">
  <g id="board"></g>
  <script>
    const g = document.getElementById('board');
    const size = 30;
    for (let row = 0; row < 8; row++) {
      for (let col = 0; col < 8; col++) {
        const rect = document.createElementNS('http://www.w3.org/2000/svg', 'rect');
        rect.setAttribute('x', col * size);
        rect.setAttribute('y', row * size);
        rect.setAttribute('width', size);
        rect.setAttribute('height', size);
        rect.setAttribute('fill', (row + col) % 2 === 0 ? '#1e293b' : '#f8fafc');
        g.appendChild(rect);
      }
    }
  </script>
</svg>