Yep

Shogi.Domain/ValueObjects/InCheckResult.cs

@@ -0,0 +1,9 @@
+namespace Shogi.Domain.ValueObjects;
+
+[Flags]
+internal enum InCheckResult
+{
+	NobodyInCheck = 1, // This kinda doesn't make sense from a Flags perspective, but it works. =/
+	Player1InCheck = 2,
+	Player2InCheck = 4
+}