Initial data commit

Task/N-queens-problem/C-sharp/n-queens-problem-3.cs

@@ -0,0 +1,29 @@
+using static System.Linq.Enumerable;
+using static System.Console;
+
+namespace N_Queens
+{
+    static class Program
+    {
+        static void Main(string[] args)
+        {
+            var n = 8;
+            var domain = Range(0, n).ToArray();
+
+            var amb = new Amb.Amb();
+            var queens = domain.Select(_ => amb.Choose(domain)).ToArray();
+            amb.Require(() => n == queens.Select(q=> q.Value).Distinct().Count());
+            amb.Require(() => n == domain.Select(i=> i + queens[i].Value).Distinct().Count());
+            amb.Require(() => n == domain.Select(i=> i - queens[i].Value).Distinct().Count());
+
+            if (amb.Disambiguate())
+            {
+                WriteLine("Position is row, value is column:-");
+                WriteLine(string.Join(" ", queens.AsEnumerable()));
+            }
+            else
+                WriteLine("amb is angry");
+            Read();
+        }
+    }
+}