diff --git a/2023/day09/main.go b/2023/day09/main.go
index c20d7e5..2cb149b 100644
--- a/2023/day09/main.go
+++ b/2023/day09/main.go
@@ -89,19 +89,3 @@ func (s *Seq) isStable() bool {
 	}
 	return true
 }
-
-func (s Seq) String() string {
-	return fmt.Sprintf("MINE: Row %d Result: %d + %d = %d\n",
-		s.row,
-		s.history[0][len(s.history[0])-2],
-		s.history[1][len(s.history[1])-1],
-		s.history[0][len(s.history[0])-1])
-}
-
-func (s Seq) Detail() string {
-	var res string
-	for i := range s.history {
-		res = fmt.Sprintf("%s%v\n", res, s.history[i])
-	}
-	return res
-}