const s = sanitizeUserInput(req.body["fen"], req.body["instructions"], req.body["solution"]);
if (typeof s === "string")
return res.json({errmsg: s});
const s = sanitizeUserInput(req.body["fen"], req.body["instructions"], req.body["solution"]);
if (typeof s === "string")
return res.json({errmsg: s});