diff --git a/kt/delete-characters-to-make-fancy-string.kt b/kt/delete-characters-to-make-fancy-string.kt
new file mode 100644
index 0000000..25efb90
--- /dev/null
+++ b/kt/delete-characters-to-make-fancy-string.kt
@@ -0,0 +1,7 @@
+class Solution {
+    fun makeFancyString(s: String): String =
+        s.windowedSequence(3, partialWindows = true)
+            .filter { it.length < 3 || it[0] != it[1] || it[1] != it[2] }
+            .map { it[0] }
+            .joinToString(separator = "")
+}