yep

Shogi.Sockets/Repositories/Dto/BoardStateDto.cs

@@ -0,0 +1,22 @@
+using Shogi.Domain;
+using Shogi.Domain.ValueObjects;
+using System.Collections.ObjectModel;
+
+namespace Shogi.Api.Repositories.Dto;
+
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+public class BoardStateDto
+{
+	public ReadOnlyDictionary<string, Piece?> State { get; set; }
+
+	public List<Piece> Player1Hand { get; set; }
+
+	public List<Piece> Player2Hand { get; set; }
+
+	public Move PreviousMove { get; }
+
+	public WhichPlayer WhoseTurn { get; set; }
+	public WhichPlayer? InCheck { get; set; }
+	public bool IsCheckmate { get; set; }
+}
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.

Shogi.Sockets/Repositories/Dto/SessionDto.cs

@@ -1,14 +1,14 @@
-namespace Shogi.Api.Repositories.Dto
+namespace Shogi.Api.Repositories.Dto;
+
+/// <summary>
+/// Useful with Dapper to read from database.
+/// </summary>
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+public class SessionDto
 {
-	/// <summary>
-	/// Useful with Dapper to read from database.
-	/// </summary>
-	public class SessionDto
-	{
-		public string Name { get; set; }
-		public string Player1 { get; set; }
-		public string Player2 { get; set; }
-		public bool GameOver { get; set; }
-		public string BoardState { get; set; }
-	}
+	public string Name { get; set; }
+	public string Player1 { get; set; }
+	public string Player2 { get; set; }
+	public BoardStateDto BoardState { get; set; }
 }
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.