if (!V.IsGoodFen(p.fen)) return "Errors in FEN";
- if (p.instruction.trim().length == 0) return "Empty instructions";
+ if (p.instruction.trim().length == 0) return "Missing instructions";
- if (p.solution.trim().length == 0) return "Empty solution";
+ if (p.solution.trim().length == 0) return "Missing solution";
return "";
}