Add game intro

67_One_Check/csharp/Board.cs

@@ -0,0 +1,18 @@
+namespace OneCheck;
+
+internal class Board
+{
+    private readonly int[][] _checkers;
+
+    public Board()
+    {
+        _checkers = 
+            Enumerable.Range(0, 8)
+                .Select(r => Enumerable.Range(0, 8)
+                    .Select(c => r > 1 && r < 6 && c > 1 && c < 6 ? 0 : 1).ToArray())
+                .ToArray();
+    }
+
+    public override string ToString() => 
+        string.Join(Environment.NewLine, _checkers.Select(r => string.Join(" ", r.Select(c => $" {c}"))));
+}

67_One_Check/csharp/Game.cs

@@ -0,0 +1,20 @@
+namespace OneCheck;
+
+internal class Game
+{
+    private readonly IReadWrite _io;
+    private readonly Board _board;
+
+    public Game(IReadWrite io)
+    {
+        _io = io;
+        _board = new Board();
+    }
+
+    public void Play()
+    {
+        _io.Write(Streams.Introduction);
+        
+        _io.WriteLine(_board);
+    }
+}

67_One_Check/csharp/Program.cs

@@ -0,0 +1,5 @@
+global using Games.Common.IO;
+global using static OneCheck.Resources.Resource;
+using OneCheck;
+
+new Game(new ConsoleIO()).Play();

67_One_Check/csharp/Resources/Introduction.txt

@@ -27,3 +27,4 @@ Here is the numerical board:
  57  58  59  60  61  62  63  64
 
 And here is the opening position of the checkers.
+