first working version, by any definition

Common/Common.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <RootNamespace>SicTransit.Woodpusher.Common</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Serilog" Version="2.12.0" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="4.1.0" />
+    <PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
+    <PackageReference Include="Serilog.Sinks.Trace" Version="3.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+  </ItemGroup>
+
+</Project>

Common/Interfaces/IEngine.cs

@@ -0,0 +1,17 @@
+using SicTransit.Woodpusher.Model;
+
+namespace SicTransit.Woodpusher.Common.Interfaces
+{
+    public interface IEngine
+    {
+        Board Board { get; }
+
+        void Initialize();
+
+        void Play(Move move);
+
+        void Play(AlgebraicMove algebraicMove);
+
+        AlgebraicMove PlayBestMove();
+    }
+}

Common/Logging.cs

@@ -0,0 +1,34 @@
+using Serilog;
+using Serilog.Events;
+using System.Reflection;
+
+namespace SicTransit.Woodpusher.Common
+{
+    public static class Logging
+    {
+        public static void EnableLogging(LogEventLevel level = LogEventLevel.Information, bool enableConsole = true)
+        {
+            var logFilename = $"{Assembly.GetCallingAssembly().GetName().Name}.log";
+
+            var loggerConfiguration = new LoggerConfiguration().MinimumLevel.Debug().Enrich.FromLogContext();
+
+            if (enableConsole)
+            {
+                loggerConfiguration = loggerConfiguration.WriteTo.Console(level);
+            }
+
+            Log.Logger = loggerConfiguration
+                .WriteTo.File(logFilename, LogEventLevel.Information)
+                .CreateLogger();
+        }
+
+        public static void EnableUnitTestLogging(LogEventLevel level = LogEventLevel.Information)
+        {
+            Log.Logger = new LoggerConfiguration()
+                .MinimumLevel.Information()
+                .Enrich.FromLogContext()
+                .WriteTo.Trace(level)
+                .CreateLogger();
+        }
+    }
+}

CommonTests/CommonTests.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <RootNamespace>SicTransit.Woodpusher.Tests</RootNamespace>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Common\Common.csproj" />
+  </ItemGroup>
+
+</Project>

Engine/Engine.csproj

@@ -7,8 +7,13 @@
     <RootNamespace>SicTransit.Woodpusher.Engine</RootNamespace>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Serilog" Version="2.12.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Model\Model.csproj" />
+    <ProjectReference Include="..\Parsing\Parsing.csproj" />
   </ItemGroup>
 
 </Project>

Engine/EvaluationProgress.cs

@@ -0,0 +1,7 @@
+namespace SicTransit.Woodpusher.Engine
+{
+    internal class EvaluationProgress
+    {
+        public int NodeCount { get; set; }
+    }
+}