Hi- is the DGT Revelation ll the only independent chess board you have? I’m looking for something my son can use to play chess against a computer and online that doesn’t require the need for his phone or computer. He will often get distracted and do other things when he has his phone or computer and I don’t want to limit his chess playing by taking away his devices. I don’t have a massive $3000 budget! Is there anything you would recommend? Thank you To develop Maia, the researchers customized L