diff --git a/BibliothequeClasses/BibliothequeClasses.csproj b/BibliothequeClasses/BibliothequeClasses.csproj
new file mode 100644
index 0000000..bb23fb7
--- /dev/null
+++ b/BibliothequeClasses/BibliothequeClasses.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/BibliothequeClasses/Class1.cs b/BibliothequeClasses/Class1.cs
new file mode 100644
index 0000000..971f736
--- /dev/null
+++ b/BibliothequeClasses/Class1.cs
@@ -0,0 +1,7 @@
+namespace BibliothequeClasses
+{
+    public class Class1
+    {
+
+    }
+}
diff --git a/mastermind/mastermind.sln b/mastermind/mastermind.sln
index 88899b6..733df28 100644
--- a/mastermind/mastermind.sln
+++ b/mastermind/mastermind.sln
@@ -3,7 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.8.34330.188
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "mastermind", "mastermind.csproj", "{5552F0D6-EBF5-44B4-81FE-8A7423BB9115}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "mastermind", "mastermind.csproj", "{5552F0D6-EBF5-44B4-81FE-8A7423BB9115}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BibliothequeClasses", "..\BibliothequeClasses\BibliothequeClasses.csproj", "{A728841C-3ADF-478B-B0C7-1DCA344348D6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -17,6 +19,10 @@ Global
 		{5552F0D6-EBF5-44B4-81FE-8A7423BB9115}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{5552F0D6-EBF5-44B4-81FE-8A7423BB9115}.Release|Any CPU.Build.0 = Release|Any CPU
 		{5552F0D6-EBF5-44B4-81FE-8A7423BB9115}.Release|Any CPU.Deploy.0 = Release|Any CPU
+		{A728841C-3ADF-478B-B0C7-1DCA344348D6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A728841C-3ADF-478B-B0C7-1DCA344348D6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A728841C-3ADF-478B-B0C7-1DCA344348D6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A728841C-3ADF-478B-B0C7-1DCA344348D6}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE