const vid = parseInt(p.vid);
if (isNaN(vid) || vid <= 0) return "Please select a variant";
- if (!V.IsGoodFen(p.fen)) return "Bad FEN string";
+ if (!V.IsGoodFen(p.fen)) return "Errors in FEN";
+
+ if (p.instruction.trim().length == 0) return "Missing instructions";
+
+ if (p.solution.trim().length == 0) return "Missing solution";
return "";
}