diff --git a/nakama/go-modules/main.go b/nakama/go-modules/main.go
index 7df31e5..af4365b 100644
--- a/nakama/go-modules/main.go
+++ b/nakama/go-modules/main.go
@@ -550,7 +550,7 @@ func (m *ChessMatch) MatchLoop(ctx context.Context, logger runtime.Logger, db *s
 			}
 
 			// Validate and apply the move
-			result := validateChessMove(s.FEN, moveData.From, moveData.To, moveData.Promotion)
+			result := validateChessMove(s.FEN, moveData.From, moveData.To, moveData.Promotion, logger)
 			if !result.Valid {
 				logger.Warn("Invalid move: %+v", moveData)
 				continue
@@ -754,16 +754,20 @@ type MoveResult struct {
 }
 
 // Validate chess move using corentings/chess/v2 library
-func validateChessMove(fenStr, from, to, promotion string) MoveResult {
+func validateChessMove(fenStr, from, to, promotion string, logger runtime.Logger) MoveResult {
 	result := MoveResult{Turn: "w"}
 
+	logger.Info("validateChessMove: FEN=%s, move=%s%s", fenStr, from, to)
+
 	// Parse FEN
 	fen, err := chess.FEN(fenStr)
 	if err != nil {
+		logger.Error("validateChessMove: FEN parse error: %v", err)
 		return result
 	}
 
 	game := chess.NewGame(fen)
+	logger.Info("validateChessMove: Game created, valid moves count: %d", len(game.ValidMoves()))
 
 	// Verify move is valid first
 	found := false
@@ -807,9 +811,11 @@ func validateChessMove(fenStr, from, to, promotion string) MoveResult {
 
 	// Check game over
 	outcome := game.Outcome()
+	method := game.Method()
+	logger.Info("validateChessMove: outcome=%v, method=%v", outcome, method)
+
 	if outcome != chess.NoOutcome {
 		result.GameOver = true
-		method := game.Method()
 
 		switch outcome {
 		case chess.WhiteWon:
@@ -819,6 +825,7 @@ func validateChessMove(fenStr, from, to, promotion string) MoveResult {
 		case chess.Draw:
 			result.Result = "1/2-1/2"
 		}
+		logger.Info("validateChessMove: GAME OVER detected! result=%s, reason will be set based on method", result.Result)
 
 		switch method {
 		case chess.Checkmate: