使用 LINQ 检查一个字符串的字符是否包含在另一个字符串中

我正在用 C# 在命令行中制作拼字游戏。玩家必须输入一些单词，如下所示：

玩家收到的信件是这样的：

sopitez

该值是一个字符串。我会检查这些字母是否包含在单词中。为此我尝试过这段代码：

String highst = (from word
                 in words 
                 where word.Contains(letters)
                 orderby points descending
                 select word).First();

但我怎么想都行不通。此代码不会选择任何单词。我知道原因是因为sopitez不包含在任何单词中。

我现在的问题是有没有办法检查字符串中的字符letters包含到单词中，而不是在字符上循环。

Note:每个字母在解决方案中最多只能使用一次。

如果我计算结果一定是potsie or postie. （我必须为此写出逻辑）

^{P.S.: I'm playing this game: www.codingame.com/ide/puzzle/scrabble https://www.codingame.com/ide/puzzle/scrabble}

This will not be performant at all but at least it will do the trick. Notice that I've used a dictionary just for the sake of simplicity (also I don't see why you would have repeated words like "potsie", I've never played scrabble). You can as well use a list of Tuples if you follow this code

EDIT:我根据OP的新评论对此进行了更改

using System;
using System.Linq;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {

        var letters = new HashSet<char>("sopitez");

        var wordsMap = new Dictionary<string, int>()
        {
            {"some", 6}, {"first", 8}, {"potsie", 8}, {"postie", 8}, {"day", 7},
            {"could", 8}, {"from", 9}, {"have", 10}, {"back", 12},
            {"this", 7}
        };

        var highest = wordsMap
            .Select(kvp => {
                var word = kvp.Key;
                var points = kvp.Value;
                var matchCount = kvp.Key.Sum(c => letters.Contains(c) ? 1 : 0);
                return new {
                    Word = word,
                    Points = points,
                    MatchCount = matchCount,
                    FullMatch = matchCount == word.Length,
                    EstimatedScore = points * matchCount /(double) word.Length // This can vary... it's just my guess for an "Estiamted score"
                };
            })
            .OrderByDescending(x => x.FullMatch)
            .ThenByDescending(x => x.EstimatedScore);


        foreach (var anon in highest)
        {
            Console.WriteLine("{0}", anon);
        }       

    }
}