diff --git a/.gitignore b/.gitignore
index 056961c..61ea780 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,9 @@
 /android/
 .idea/
 *.csproj
+*.csproj*
 *.csproj.old
+*.csproj.old*
 *.sln
 *.sln.*
 .DS_Store
diff --git a/connect4-moderator-observer.sln b/connect4-moderator-observer.sln
deleted file mode 100644
index a35ae55..0000000
--- a/connect4-moderator-observer.sln
+++ /dev/null
@@ -1,19 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "connect4-moderator-observer", "connect4-moderator-observer.csproj", "{88C189D2-5C9A-411D-8713-291AC0841D8C}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-	Debug|Any CPU = Debug|Any CPU
-	ExportDebug|Any CPU = ExportDebug|Any CPU
-	ExportRelease|Any CPU = ExportRelease|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{88C189D2-5C9A-411D-8713-291AC0841D8C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{88C189D2-5C9A-411D-8713-291AC0841D8C}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{88C189D2-5C9A-411D-8713-291AC0841D8C}.ExportDebug|Any CPU.ActiveCfg = ExportDebug|Any CPU
-		{88C189D2-5C9A-411D-8713-291AC0841D8C}.ExportDebug|Any CPU.Build.0 = ExportDebug|Any CPU
-		{88C189D2-5C9A-411D-8713-291AC0841D8C}.ExportRelease|Any CPU.ActiveCfg = ExportRelease|Any CPU
-		{88C189D2-5C9A-411D-8713-291AC0841D8C}.ExportRelease|Any CPU.Build.0 = ExportRelease|Any CPU
-	EndGlobalSection
-EndGlobal